DBaldock9
From Little Rock, AR, now working at NASA in Houston, TX
Birthday
January 6
Website
https://www.flickr.com/photos/david-r-baldock/collections
Location
Houston, TX USA
Interests
#### Hobbies & Interests ####
01.) Computers
02.) Home Audio / Video
03.) Photography
04.) Walking for Fitness
05.) Sci-Fi Conventions
06.) Renaissance Festivals
07.) Travel
08.) Reading Sci-Fi & British Mysteries
Headphone Inventory
#### Headphone Inventory: ####
My first headphones were some Zenith Stereo Headphones (Model: 839-43), from the early 1970s, that my Dad bought along with a Zenith console stereo. We don't have them any longer, but this is what they looked like - http://future-forms.com/portfolio-item/zenith-839-43-headphones/

&&&&& Listed by descending &&&&&
&&&&& price, within type &&&&&
&&&&& (Mfg Specs, not measured) &&&&&
****
**** Headphones - Begin ****
01.) Beyerdynamic DT-831 - Headphone, 250Ω, 96dB/mW, 5Hz-32KHz, Sealed back, 1x Dynamic, Tethered cable (installed a 2.5mm TRRS plug) [~$200]

02.) KEF Space One (w/ANC) - Headphone, 32Ω, 89-93dB/mW, 20Hz-20KHz, Sealed back, 1x Dynamic, Removable cable [$99.99]

03.) MEE Audio Matrix2 AF62 - Bluetooth 4.0 aptX Wireless Headphone w/Mic, can also be used wired, 64Ω, 103db/mW, 15Hz-20KHz, Sealed back, 1x Dynamic [$94.99] (These were my Dad's)

04.) Avantree Audition Pro - Bluetooth 4.1 aptX Low Latency Wireless Headphone w/Mic, can also be used wired, 32Ω, 20Hz-20KHz, Sealed back, 1x Dynamic [$69.99] (These are my Dad's)

05.) [on order] OneOdio Pro G, 32Ω, 110dB/mW, 20Hz-20KHz, Sealed back, 1x Dynamic, Detachable Boom Mic, 3.5mm & 6.35mm cables [$35.51] (To use at work, for teleconferences)
**** Headphones - End ****
****

****
**** Earbuds - Begin ****
06.) VE Zen 2.0 ZOE (2.5mm & 3.5mm cables) - Earbud, 320Ω, 108dB/mW, 16HZ-23KHz, Plastic housing, 1x Dynamic, 0.78mm cable [$178.00]

07.) Wong Kuan Wae "Blur hALF/hALF" (2.5TRRS) - Earbud, 150Ω, Plastic housing, 1x Dynamic, Tethered cable

08.) Wong Kuan Wae "Blur 魔音" (2.5TRRS) - Earbud, 300Ω, Plastic housing, 1x Dynamic, Tethered cable

09.) VE Zen Lite L Standard (2.5mm TRRS) - Earbud, 150Ω, Plastic housing, 1x Dynamic, Tethered cable [$148.00 (Free - with VE ZOE purchase)]

10.) [on order] Smabat ST-10s (Gold/Black) - Earbud, 120Ω, 115dB/mW, 10Hz-28KHz, Metal housing, 1x Dynamic, MMCX cable [$146.32]

11.) VE Asura 2.0s AOE (2.5mm & 3.5mm cables) - Earbuds, 150Ω, 110dB/mW, 16HZ-23KHz, Plastic housing, 1x Dynamic, 0.78mm cable [$108.00]

12.) K's 500-Ohm v2 (2.5TRRS) - Earbud, 500Ω, 110dB/mW, 10Hz-35KHz, Plastic housing, 1x Dynamic, Tethered cable [$106.65]

13.) NiceHCK EBX - Earbud, 32Ω, 120dB/mW, 20Hz-20KHz, Metal housing, 1x Dynamic, MMCX cable [$98.13]

14.) MusicMaker ToneKing TY2 - Earbud, 16Ω, 100dB/mW, 20Hz-25KHz, Metal housing, 2x Dynamic, Tethered cable [$88.01]

15.) VE Asura 2.0 (2.5TRRS) - Earbud, 150Ω, 120dB/mW, 8Hz-25KHz, Plastic housing, 1x Dynamic, Tethered cable [$88.00]

16.) Smabat ST-10 - Earbud, 45Ω, 115dB/mW, 10Hz-22KHz, Metal housing, 1x Dynamic, MMCX cable [$81.84 (Sale price)]

17.) K's 600-Ohm (2.5mmTRRS) - Earbud, 600Ω, 108dB/mW, 15Hz-35KHz, Plastic housing, 1x Dynamic, Tethered cable [$80.24 ($79.01 (Sale price) +$1.23 (Ranko 2.5mm TRRS plug)]

18.) TY Hi-Z HP650 (2.5mm TRRS) - Earbud, 650Ω, 120dB/mW, 12Hz-24KHz, Plastic housing, 1x Dynamic, Tethered cable [$76.23 ($75.00 (used) +$1.23 (Ranko 2.5mm TRRS plug))]

19.) BHOBuds MAG-7 (2.5mm TRRS) - Earbud, 32Ω, Plastic housing, 1x Dynamic, Tethered cable [$75.00 ($67.00 +$8.00 (wire & Ranko 2.5mm TRRS plug))]

20.) MusicMaker ToneKing TO400s - Earbud, 400Ω, 112dB/mW, 10Hz-32KHz, Metal housing, 1x Dynamic, MMCX cable [$72.44]

21.) Homemade Beryllium - Earbud, 600Ω, Metal housing, 1x Dynamic, MMCX cable [$68.83 (Drivers = $43.20, Shells = $18.50, MMCX Jacks = $7.13)]

22.) OurArt Ti7 - Earbud, 32Ω, 118dB/mW, 20Hz-25KHz, Metal housing, 1x Dynamic, MMCX cable [$59.00]

23.) Svara-L - Earbud, 115Ω, 98dB/mW, 8Hz-25KHz, Metal housing, 1x Dynamic, MMCX cable [$54.00]

24.) QianYun Qian39 (2.5mm TRRS) - Earbud, 22Ω, 106dB/mW, 40Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$52.36 ($6.13 +$46.23 (wire & Ranko 2.5mm TRRS plug))]

25.) MusicMaker ToneKing TO200 - Earbud, 200Ω, 113dB/mW, 12Hz-33KHz, Metal housing, 1x Dynamic, MMCX cable [$50.00]

26.) Svara-L - Earbud, 32Ω, 116dB/mW, 15Hz-22KHz, Metal housing, 1x Dynamic, MMCX cable [$49.68]

27.) Homemade Graphene (2.5TRRS) - Earbud, 400Ω, Wood housing, 1x Dynamic, Tethered cable [$48.00 (Drivers = $27, Shells = $14, Cable = $7)]

28.) Daik DK-Song - Earbud, 16Ω, 108dB/mW, 20Hz-24KHz, Wood housing, 1x Dynamic, MMCX cable [$46.95]

29.) Fengru DIY L614 - Earbud, 32Ω, 98dB/mW, 20Hz-20KHz, Wood housing, 1x Dynamic, MMCX cable [$38.00]

30.) VE Monk Plus Espresso (2.5TRRS) - Earbud, 64Ω, 122dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$30.00] (Second set Free with VE Biggie / Smalls purchase)

31.) NiceHCK DIY Graphene (2017) - Earbud, 20Ω, 108dB/mW, 15Hz-30KHz, Plastic housing, 1x Dynamic, Tethered cable [$29.53]

32.) Penon Earbuds Anonymous - Earbud, 32Ω, 101dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$25.00 (Introductory Price)]

33.) NiceHCK DIY PK2 (White) - Earbud, 16Ω, 106dB/mW, 10Hz-22KHz, Plastic housing, 1x Dynamic, Tethered cable [$21.63]

34.) VE Monk Plus SPC - Earbud, 64Ω, 116dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$20.98]

35.) VE Monk Lite (Silver/White) - Earbud, 120Ω, 114dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered SPC cable [$20.00 w/EX-Lite Pack]

36.) VE Monk Lite (Gold/Black) - Earbud, 40Ω, 117dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered Android 3-button cable [$18.82 w/EX Pack]

37.) 1More Piston (EO303) - Earbud, 32Ω, 98dB/mW, 20Hz-24KHz, Metal housing, 1x Dynamic, Tethered cable w/Mic [$17.79]

38.) MusicMaker ToneKing TP16 - Earbud, 32Ω, 118dB/mW, 15Hz-25KHz, Plastic housing, 1x Dynamic, Tethered cable [$16.90]

39.) S.e.n.f.e.r. P.T.1.5. (2017) - Earbud, 32Ω, 120dB/mW, 10Hz-25KHz, Metal housing, 1x Dynamic, MMCX cable [$16.28] (2 additional sets ordered, for $7.90/ea, in Dec, 2017)

40.) QianYun Qian25 (2.5mm TRRS) - Earbud, 32Ω, 108dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$13.91 ($5.91 +$8.00 (wire & Ranko 2.5mm TRRS plug))]

41.) Celebrat Mantis C7 - Earbud, 16Ω, 100dB/mW, 20Hz-20KHz, Metal housing, 1x Dynamic, tethered cable w/Mic [$12.99]

42.) Vido (Blue) (2.5mm TRRS) - Earbud, 16Ω, 108dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$11.99 ($3.99 +$8.00 (wire & Ranko 2.5mm TRRS Plug))]

43.) VE Monk Plus (Coffee Gold) - Earbud, 64Ω, 120dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered Android 3-button cable [$10.00]

44.) VE Monk Lite (Gold/Black) - Earbud, 40Ω, 117dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered 1-Button Mic cable [$9.98]

45.) NiceHCK ME80 - Earbud, 34Ω, 109dB/mW, 20Hz-25KHz, Metal housing, 1x Dynamic, Tethered cable [$9.90 ("Lucky Bag" Sale price)]

46.) RYGMR RY4S (UE cable)(2.5mm TRRS) - Earbud, 32Ω, 95dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$9.62 ($8.39 +$1.23 (Ranko 2.5mm TRRS plug))]

47.) QianYun Qian39 (3.5mm TRS) - Earbud, 22Ω, 106dB/mW, 40Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$6.13]

48.) QianYun Qian25 - Earbud, 32Ω, 108dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$5.91]

49.) VE Monk Plus (Smoke) - Earbud, 64Ω, 120dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$5.00] (purchased to use as loaner)

50.) Vido (Blue) - Earbud, 16Ω, 108dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable w/Mic [$4.99]

51.) Vido (White) (Wong Kuan Wae modded) (3.5mm TRS) - Earbud, 16Ω, 108dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [Gift]
**** Earbuds - End ****
****

****
**** Earphones - Begin ****
52.) HotFi HM2 (2017) - Earphone, 16Ω, 112dB/mW, 18Hz-22KHz, Plastic housing, 2x Dynamic, 2x Single & 2x Dual Balanced Armature (8 Drivers per side), MMCX cable [$400.00]

53.) HotFi HM1 (2016) - Earphone, 32Ω, 112dB/mW, 18Hz-22KHz, Plastic housing, 2x Dynamic & 2x Dual Balanced Armature (6 Drivers per side), MMCX cable [$166.50]

54.) Etymotic ER2XR - Earphone, 15Ω, 96dB/mW, 20Hz-16KHz, Metal housing, 1x Dynamic, Etymotic proprietary MMCX cable [$162.30]

55.) LZ A4 - Earphone, 16Ω, 120dB/mW, 20Hz-25KHz, Metal housing, 1x Dynamic & 2x Balanced Armature, MMCX cable [$150.00 (promo discount from $195)]

56.) TingJie R4 (4in1) - Earphone, 16Ω, 110dB/mW, 20Hz-20KHz, Ebony wood housing, 1x Dynamic & 1x Balanced Armature, MMCX cable [$89.60]

57.) NiceHCK DT100 - Earphone, 42Ω, 106dB/mW, 20Hz-40KHz, Metal housing, 1x Balanced Armature, MMCX cable [$88.17]

58.) Rose Aurora - Earphone, 18Ω, 112dB/mW, 10Hz-24KHz, Plastic housing, 1x Dynamic, MMCX cable [$69.00 (Received as Gift, with TY Hi-Z 650 & BHOBuds MAG-7 purchase)]

59.) NiceHCK NX7 - Earphone, 55Ω, 108dB/mW, 20Hz-25KHz, Plastic & Metal housing, 2x Dynamic, 4x Balanced Armature, 1x Piezo, 0.78mm cable [$65.00 (Introductory price)]

60.) VE Biggie - Earphone, 80Ω, 114dB/mW, 17Hz-22KHz, Plastic housing, 1x Dynamic, 0.78mm cable [$60.00 (Promotional price, included Biggie, Smalls, & Monk Plus Espresso (2.5TRRS))]

61.) VE Smalls - Earphone, 24Ω, 117dB/mW, 17Hz-22KHz, Plastic housing, 1x Dynamic, 0.78mm cable [$60.00 (Promotional price, included Biggie, Smalls, & Monk Plus Espresso (2.5TRRS))]

62.) Tennmak Crazy Cello - Earphone, 28Ω, 105dB/mW, 5Hz-70KHz, Metal housing, 1x Dynamic, Tethered cable [$49.23]

63.) ZhiYin Z5000 - Earphone, 32Ω, 108dB/mW, 10Hz-30KHz, Metal housing, 1x Tesla Dynamic, MMCX cable [$47.20]

64.) Audio Sense T100 - Earphone, 16Ω, 102dB/mW, 20Hz-22KHz, Plastic housing, 1x Dynamic, MMCX cable [$44.98]

65.) Fengru Handmade Custom - Earphone, 16Ω, 109dB/mW, 20Hz-20KHz, Plastic housing, 2x Dynamic, MMCX cable [$42.96]

66.) NiceHCK W1 - Earphone, 16Ω, 125dB/mW, 10Hz-24KHz, Ebony wood housing, 1x Dynamic, MMCX cable [$38.76]

67.) AK Light (2016) - Earphone, 32Ω, 90dB/mW, 12Hz-24KHz, Metal housing, 1x Dynamic, Tethered cable [$36.34]

68.) Audio Sense T180 - Earphone, 24Ω, 100dB/mW, 20Hz-22KHz, Plastic housing, 1x Balanced Armature (Knowles RAF-32873), MMCX cable [$34.76]

69.) HLSX Magaosi MGS-BK50 - Earphone, 32Ω, 101dB/mW, 20Hz-20KHz, Wood housing, 1x Dynamic & 1x Balanced Armature, Tethered cable w/Mic [$34.35]

70.) KB Ear F1 - Earphone, 22Ω, 105dB/mW, 20Hz-20KHz, Plastic housing, 1x Balanced Armature, MMCX cable [$33.75]

71.) Tin HiFi T2 - Earphone, 16Ω, 102dB/mW, 12Hz-40KHz, Metal housing, 2x Dynamic, MMCX cable [$31.49, (Received as gift, with preamp purchase from Head-Fi Forum Member)]

72.) DEAT HiFi Small - Earphone, 16Ω, 112dB/mW, 15Hz-28KHz, Metal housing, 1x Micro Dynamic, Tethered cable [$29.00]

73.) S.e.n.f.e.r. 4.i.n.1. (2016) - Earphone, 32Ω, 108dB/mW, 10Hz-30KHz, Metal housing, 1x Dynamic & 1x Balanced Armature, MMCX cable [$28.86]

74.) BossHiFi B3 - Earphone, 16Ω, 123dB/mW, 20Hz-20KHz, Ebony wood housing, 1x Dynamic & 1x Balanced Armature, Tethered cable [$28.49]

75.) Magaosi MGS-BK50 (2018) - Earphone, 32Ω, 112dB/mW, 5Hz-30KHz, Wood housing, 1x Dynamic & 1x Balanced Armature, MMCX cable [$25.59]

76.) S.e.n.f.e.r. D.T.2. IE800 v2 - Earphone, 16Ω, 118dB/mW, 6Hz-23.5KHz, Ceramic housing, 1x Dynamic & 1x Balanced Armature, MMCX cable [$25.62]

77.) Remax RM-600M - Earphone, 16Ω, 97dB/mW, 18Hz-22KHz, Metal housing, 1x Balanced Armature, Tethered cable w/Mic [$25.19]

78.) Pizen PianoTrio - Earphone, 16Ω, 108dB/mW, 20Hz-20KHz, Plastic housing, 2x Dynamic, MMCX cable [$23.65]

79.) [damaged by me] HiFi BCD X10 - Earphone, 16Ω, 108dB/mW, 10Hz-22KHz, Metal housing, 1x Micro Dynamic, Tethered cable w/Mic [$22.99]

80.) Tennmak Pro - Earphone, 16Ω, 100dB/mW, 10Hz-20KHz, Plastic housing, 2x Dynamic, MMCX cable [$22.68]

81.) VE BIE - Earphone, 32Ω, 115dB/mW, 17Hz-22KHz, Metal housing, 1x Dynamic, Tethered cable [$20.98]

82.) DZAT DF-10 - Earphone, 16Ω, 90dB/mW, 6Hz-20KHz, Red Ebony wood housing, 1x Dynamic, Tethered cable w/Mic [$19.99]

83.) MEMT X5 - Earphone, 16Ω, 100dB/mW, 20Hz-20KHz, Metal housing, 1x Micro Dynamic, Tethered cable w/Mic [$19.90]

84.) Kinera BA05 (2016) - Earphone, 12Ω, 103dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic & 1x Balanced Armature, MMCX cable [$19.59]

85.) ZhiYin Z2000 - Earphone, 16Ω, 108dB/mW, 20Hz-20KHz, Metal housing, 1x Dynamic, MMCX cable [$18.79]

86.) S.e.n.f.e.r. D.T.6. - Earphone, 32Ω, 118dB/mW, 5Hz-40KHz, Plastic & Metal housing, 1x Dynamic, 1x Balanced Armature, 1x Piezo, MMCX cable [$16.95]

87.) BASN Ebon BC200 - Earphone, 18Ω, 93dB/mW, 15Hz-22KHz, Ebony wood housing, 2x Dynamic, MMCX cable [$13.09]

88.) TTLIFE 3C00H10 (2016) - Earphone, 16Ω, 113dB/mW, 20Hz-20KHz, Plastic & metal housing, 1x Dynamic, Tethered cable w/Mic [$6.57]
**** Earphones - End ****
****

~~~~
~~~~ Next 4 came with specific equipment ~~~~
89.) Panasonic EAH-Z31 (with 1988 CD Walkman) - Earbud, 16Ω, Plastic housing, 1x Dynamic, Tethered cable

90.) Samsung EHS44 (with 2011 Galaxy Tablet) - Earphone, 16Ω, Plastic housing, 1x Dynamic, Tethered cable

91.) Roku Premium (with Roku 4 Net Streamer) - Earphone, 16Ω, Plastic housing, 1x Dynamic, Tethered cable

92.) JBL Premium (with Roku Ultra Net Streamer) - Earphone, 32Ω, Plastic housing, 1x Dynamic, Tethered cable
~~~~

%%%%
%%%%
93.) [given to me, I gave to co-worker] HiSoundAudio PAA-1 - Earbud, 32Ω, 105dB/mW, 20Hz-21KHz, Plastic housing, 1x Dynamic, Tethered cable [$19.90]

94.) [sold to co-worker] VE Monk Plus (Royal Purple) - Earbud, 64Ω, 120dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered 1-button cable [$7.00]

95.) [sold to co-worker] VE Monk Plus (Smoke) - Earbud, 64Ω, 120dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic, Tethered cable [$5.00]
%%%%

****
**** 5 given to my Dad, for his Phone & Shanling M1 DAP ****
96.) Penon IEM - Earphone, 32Ω, 108dB/mW, 5Hz-28KHz, Metal housing, 1x Dynamic, Tethered cable [$99.90 (Free Gift, w/LZ A4 purchase)]

97.) DIY Handmade PHEB01 - Earbud, 24Ω, 107dB/mW, 10Hz-20KHz, Metal housing, Dual Diaphragm / CCAW Dynamic, Tethered cable [$29.90]

98.) OKCSC DD3 (2016) - Earphone, 12Ω, 103dB/mW, 20Hz-20KHz, Plastic housing, 1x Dynamic & 1x Balanced Armature, MMCX cable [$23.23]

99.) 1More Piston (EO303) - Earbud, 32Ω, 98dB/mW, 20Hz-24KHz, Metal housing, 1x Dynamic, Tethered cable w/Mic [$16.13]

100.) Langsdom T16 - Earbud, 32Ω, 107dB/mW, 20Hz-20KHz, Metal housing, 1x Balanced Armature, Tethered cable w/Mic [$10.20]
****
Headphone Amp Inventory
#### Headphone Amp Inventory: ####
01.) iFi Micro iDSD - Portable Dual-core Burr-Brown DAC/Amp - Input (3.5mm TRS, SPDIF (Coaxial/Optical), USB), Output (6.5mm TRS, 2x RCA, SPDIF Coaxial) (portable)

02.) [parts to build] XRK Audio Desktop Class A - 2x Boards for Balanced Amp, 1x Board for Single-Ended Amp (desktop)

03.) XRK Audio Pocket Class A NHB (No Holds Barred - hand-tuned) Amp - Input (3.5mm TRS), Output (3.5mm TRS) (portable)

04.) iBasso PB2 (used) - Fully Balanced Amp - Input (3.5mm TRS & 6-Pin Hirose (Balanced)), Output (3.5mm TRS & 2.5mm TRRS) [Modded: 2.5mm TRRS output jack] (portable)

05.) FiiO BTR5 - BT/USB DAC/Amp - Input (BT & USB), Output (3.5mm TRS & 2.5mm TRRS) (portable)

06.) Radsone EarStudio ES100 - BT/USB DAC/Amp - Input (BT & USB), Output (3.5mm TRS & 2.5mm TRRS) (portable)

07.) Little Bear B4-X - Tube Hybrid Amp - JAN5899 Tubes, Input (3.5mm TRS), Output (3.5mm TRS & 2.5mm TRRS) [Modded: replaced op-amp sockets and tubes] (portable)

08.) Loxjie P20 - Fully Balanced Tube Hybrid Amp - Reflektor 6N3P-DR Tubes (1980 NOS), Input (2x RCA & 2x 3-Pin XLR), Output (6.5mm TRS & 4-Pin XLR) [Modded: added 4 op-amp sockets; and using 3A Linear 12Vdc Supply] (desktop)

09.) VE Odyssey HD - DAC/Amp - Input (USB Type-C), Output (3.5mm TRS) (portable)

10.) Walnut F2 - DAP/DAC/Amp - Input (Micro-USB, 3.5mm TRS), Output (3.5mm TRS & 2.5mm TRRS) [Modded: 4x MUSES8920E, 2x SSM2142SZ] (portable)

11.) Walnut F1 - Amp - Input (3.5mm TRS), Output (3.5mm TRS & 2.5mm TRRS) (portable)

12.) Walnut V2 - DAP/Amp - Input (3.5mm TRS), Output (3.5mm TRS) (portable)

13.) Zishan Z1 - DAP/Amp - Input (3.5mm TRS), Output (3.5mm TRS) (portable)

14.) S.M.S.L. sAp VI - Amp - Input (3.5mm TRS), Output (3.5mm TRS) [Modded: upgraded capacitors] (desktop)

15.) BoomCloud360 BoomStick - Amp - Input (3.5mm TRRS, Microphone pass-through), Output (3.5mm TRRS, Microphone Pass-through) (portable)

**** Op-Amps to use in most of the Headphone Amps ****
01.) Sparkos SS3602 - Dual Discrete Op-Amp on DIP-8 header [1x Original, $84.00][2x Newer Low Profile, $83.00 ea]
02.) OPA-627-AU - 2x Mono Op-Amps on DIP-8 header [2x, $55.42 ea][4x, $61.82]
03.) Burson V6 Classic - Dual Discrete Op-amp on DIP-8 header (used) [3x, $54.62 ea]
04.) Burson V6 Vivid - Dual Discrete Op-amp on DIP-8 header [2x, $50.00 ea]
05.) ADA-4627-1BRZ - 2x Mono Op-Amps on DIP-8 header [1x, $46.39]
06.) NJR MUSES02 - Dual Op-Amp [2x, $46.25 ea]
07.) Burson V5i - Dual Hybrid Op-Amp [2x, $34.50 ea]
08.) AD-797-BRZ - 2x Mono Op-Amps on DIP-8 header [2x, $28.73 ea]
09.) HiFi Fever OP03 - Dual Discrete FET Input Op-amp on DIP-8 header [2x, $25.90 ea]
10.) BUF-634-U - 2x Mono Buffers on DIP-8 header [2x, $24.22 ea]
11.) THS-3091-D - 2x Mono Op-Amps on DIP-8 header [2x, $22.65 ea]
12.) MUSES-8920E - Dual J-FET Op-Amp on DIP-8 header [2x, $16.75 ea]
13.) AD-8620-ARZ - Dual Op-Amp (SOIC) to replace OP275 in DAC LPF [6x, $16.67 ea]
14.) MUSES-8920E - Dual J-FET Op-Amp to replace OP275 in DSD & JRC4580 in F2 [6x, $13.75 ea]
15.) OPA-1622 - Dual Op-Amp (VSON-10) on DIP-8 header [2x, $12.66 ea; 4x, $7.89 ea]
16.) AD-8066-ARZ - Dual Op-Amp on DIP-8 header [2x, $10.19 ea]
17.) OPA-189-IDR - 2x Mono Op-Amps on DIP-8 header [1x, $9.95 ea]
18.) LME-49720-HA - Dual Op-Amp (TO-99 round metal case) [2x, $9.68 ea; 4x, $11.16 ea]
19.) LT-1678-IS8 - Dual Op-Amp on DIP-8 header [2x, $9.58 ea]
20.) AD-828-ARZ - Dual Op-Amp on DIP-8 header [2x, $9.31 ea]
21.) OPA-2604-AP - Dual Op-Amp on DIP-8 header (stock in F2) [3x, $9.02 ea]
22.) OPA-2209-AID - Dual Op-Amp on DIP-8 header [2x, $8.83 ea]
23.) OPA-196-IDR - 2x Mono Op-Amps on DIP-8 header [1x, $8.15 ea]
24.) LME-49710-HA - Mono Op-Amp (TO-99 round metal case) [10x, $7.67 ea]
25.) TLV-172-IDR - 2x Mono Op-Amps on DIP-8 header [1x, $7.17 ea]
26.) AD-825-AR V3 - 2x Mono Op-Amps on DIP-8 header [2x, $7.00 ea]
27.) OPA-1688-ID - Dual Op-Amp on DIP-8 header [2x, $6.08 ea]
28.) AD-8397-ARZ - Dual High Current Op-Amp (SOIC) to replace OP275 in DAC LPF [2x $5.85 ea; 2x on DIP-8 headers $8.88 ea]
29.) PHILIPS NE-5532-N - Dual Op-Amp (Vintage - mid-90s) [3x, $3.95 ea]
30.) LME-49720-NA - Dual Op-Amp [2x, $2.95 ea]
31.) OPA-2134-PA - Dual Op-Amp (stock in F1) [2x, $2.30 ea]
32.) LM-4562-NA - Dual Op-Amp (stock in Z2, Z3, & DSD) [3x]
33.) JRC-5532-D - Dual Op-Amp (stock in P20) [4x]
34.) TI NE-5532-P - Dual Op-Amp (stock in Z1 & V2) [2x]
35.) LF-353-N - Dual Op-Amp (purchased in the mid-80s) [3x]
36.) OP-275 - Dual Op-Amp (SOIC) (stock in DSD LPF) [2x]
**** The Next 5 came with the iBasso PB2 Amp ****
37.) LME-49710-NA - Mono Op-Amp [4x]
38.) OPA-604-AP - Mono Op-Amp [4x]
39.) AD-797-AR - Mono Op-Amp / Buffer SOIC-8 on DIP-8 header [4x]
40.) BUF-634-P - Mono Buffer w/Class A Bias Resistor [4x]
41.) BUF-634-U - Mono Buffer SOIC-8 on DIP-8 header [4x]
**** Single Channel Differential Line Drivers to use in Walnut F1/F2 ****
42.) AD SSM-2142-PZ - Single Channel Differential Line Driver DIP-8 [2x, $6.28 ea]
43.) TI DRV-134-PA - Single Channel Differential Line Driver DIP-8 (stock in F1) [2x]
44.) THAT 1646-P08-U - Single Channel Differential Line Driver DIP-8 [2x, $4.87 ea]
45.) AD SSM-2142-SZ - Single Channel Differential Line Driver SOIC-16 for F2 [2x, $15.63 ea]
46.) TI DRV-134-UA - Single Channel Differential Line Driver SOIC-16 (stock in F2) [2x]
**** DIP Adapters ****
... BrownDog 111001 Adapter for Dual TO-99 to DIP-8 header [$4.37 ea]
... BrownDog 020601B Adapter for Single TO-99 to DIP-8 header [$3.03 ea]
... BrownDog 020302 Adapter for Dual SOIC-8 to DIP-8 header [$3.03 ea]
... BrownDog 970601 Adapter for Single SOIC-8 to DIP-8 header [$3.03 ea]
****
Source Inventory
#### Source Inventory: ####
01.) Onkyo DP-X1B DAP [currently having Battery issues]

02.) Shanling M3s DAP/DAC

03.) Shanling M2s DAP/DAC

04.) Shanling M1 DAP/DAC

05.) Shanling M0 DAP/DAC

06.) Cayin N3 DAP/DAC

07.) Zishan DSDs (Dual AK4497EQ) DAP/DAC

08.) Zishan DSD (AK4497EQ) DAP/DAC (2x - 1x Stock, 1x Modded)

09.) Zishan Z3 DAP/DAC

10.) Zishan Z2 DAP/DAC

11.) Zishan Z1 DAP/DAC/Amp

12.) Walnut F2 DAP/DAC/Amp

13.) Walnut V2 DAP/Amp

14.) LG V30 phone (can be used with any of the Amps)

15.) Nexus 7 tablet [currently having Battery & Charging issues] (can be used with any of the Amps)

16.) Home-built Core i7-3930K PC - Kubuntu Linux (with Win7 Pro / Win10 Pro in Virtual Machines) w/JRiver MC26 (TOSLINK to Topping D70, iFi Micro iDSD, or FiiO Taishan D03K DAC; or USB to DACs)

17.) Sager NP8967 (Clevo P960RF) Core i7-9750H Laptop - Currently Win10 Pro (planning to install Linux, and run Win10 Pro in a VM) w/JRiver MC26 (TOSLINK to Topping D70, iFi Micro iDSD, or FiiO Taishan D03K DAC; or USB to DACs)

18.) Asus Eee PC 1215B-PU17 Netbook - Audiophile Linux [not currently booting, due to hard drive issues] (can be used with any of the Amps or USB DACs)

19.) Roku Ultra (4670B) Net Streamer (uses Newcare HDMI to TOSLINK adapter, for audio to Topping D70, iFi Micro iDSD, or FiiO Taishan D03K DAC)
Cable Inventory
#### Cable Inventory: ####
01.) Impact Audio Cables - Custom Balanced 4-ft 2-strand Type 6 Copper Litz Balanced cable, 2.5mm TRRS Plug -to- MMCX [$89.65]

02.) Lunashops LN006038 - 8-Strand Silver & Gold Plated OCC Copper Balanced cable, 2.5mm TRRS Plug -to- MMCX [$71.20]

03.) Venture Electronics Pure Blue (Silver) Balanced cable, 2.5mm TRRS Plug -to- 0.78mm 2-Pin [$60.00, Discount price w/VE ZOE]

04.) Impact Audio Cables - Custom 1-ft 2-strand Type 6 Copper Litz Adapter cable (3.5mm TRS Plug -to- 2.5mm TRRS Jack) [$52.65]

05.) Trinity Audio Bluetooth (v4.0, aptX) Lanyard, for MMCX [$49.00]

06.) ISN Audio C16 - 16-Strand Single Crystal Copper Balanced cable 2.5mm TRRS -to- 0.78mm 2-Pin [$43.91]

07.) LZ 8-Strand 6N Single Crystal Copper Unbalanced cable, 3.5mm TRS Plug -to- MMCX [$43.12]

08.) FiiO RC-SE1B - 4-Strand Silver Plated Copper Balanced cable w/Teflon insulation, 2.5mm TRRS Plug -to- MMCX (fairly microphonic) [$37.90]

09.) Lunashops LN005369 - 4-Strand Soft OFC Balanced cable, 2.5mm TRRS Plug -to- MMCX [$35.88]

10.) Venture Electronics SPC Unbalanced cable, 3.5mm TRRS Plug -to- 0.78mm 2-Pin, w/Mic & Remote Volume [$23.01]

11.) NiceHCK 16-Strand Silver Plated Copper Balanced cable, 2.5mm TRRS Plug -to- MMCX [$22.87]

12.) ZSFS 4-Strand Blue/Silver Unbalanced cable, 3.5mm TRRS Plug -to- 0.78mm 2-Pin, w/Mic & Remote Volume [$21.25]

13.) Venture Electronics Oyaide 102ssc Balanced cable, 2.5mm TRRS Plug -to- 0.78mm 2-Pin [$20.00, Discount price w/VE AOE]

14.) NiceHCK 16-Strand Copper Unbalanced cable, 3.5mm TRS Plug -to- MMCX [$19.20]

15.) Venture Electronics Espresso Balanced cable, 2.5mm TRRS Plug -to- MMCX [$17.50]

16.) Venture Electronics Espresso Balanced cable, 2.5mm TRRS Plug -to- 0.78mm 2-Pin [$17.50]

17.) Lunashops - Unbalanced 4-ft (Blue, Black, & Brown) w/Mic & Remote Volume, 3.5mm TRRS Plug -to- MMCX [$12.52 each]

18.) Various 3.5mm TRS Plug -to- MMCX cables that came with the Earphones I've purchased

19.) Various 2.5mm TRRS & 3.5mm TRS cables and adapters that I've custom assembled
Other Audio Equipment
#### Other Audio Equipment: ####
**** Home A/V system is currently pretty simple ****
---- Sources ----
01.) Roku Ultra (4670B) - Net Streamer (HDMI output)
02.) Panasonic DMR-EZ475V - VCR / DVD R/W (HDMI & TOSLINK output)
03.) Home-built Core i7-3930K (Kubuntu Linux) PC w/Blu-Ray R/W (HDMI, DisplayPort, USB, & TOSLINK output)
04.) Sager NP8967 (Clevo P960RF) Core i7-9750H Laptop - Currently Win10 Pro (planning to install Linux, and run Win10 Pro in a VM) w/JRiver MC26 (HDMI, Display Port, USB, TOSLINK, & 3.5mm Analog output)
05.) Asus Eee PC 1215B-PU17 (AP Linux) Netbook (HDMI, USB, & Analog output)
06.) AR The Turntable (1984)

---- Adapters / Converters ----
01.) Topping D70 DAC - 2x AK4497EQ chips (32-Bit / 768-KHz, DSD512) USB, I2S, SPDIF, & TOSLINK inputs; RCA Single-Ended & XLR Balanced outputs
02.) VE Odyssey HD - DAC dongle (32-Bit / 384-KHz) USB-C input; 3.5mm Single-Ended output
03.) FiiO Taishan D03K - Cirrus 4344 DAC (24-Bit / 192-KHz) SPDIF & TOSLINK inputs; RCA & 3.5mm Single-Ended outputs
04.) Reiyin DA-02 - DAC dongle (24-Bit / 192-KHz) USB-A Input, 3.5mm Single-Ended or TOSLINK Optical Digital outputs
05.) BlitzWolf BW-BR4 - Bluetooth V5.0 aptX HD Transmitter/Receiver
06.) Specialty-AV ADC-58 - 48-KHz or 192-KHz Analog to Digital Converter
07.) Club3D CAC-1070 - DisplayPort 1.2 to HDMI 2.0 Adapters
08.) Newcare - HDMI 2.0b Audio Extractor, TOSLINK output

---- Switches ----
01.) Extron DXP 88 - 1080P @ 60Hz HDMI Video 8x8 Matrix
02.) Monoprice Blackbird 18843 - 4K @ 6Hz 4x1 HDMI Multiview Video Processor
03.) ShinyBow SB-8804LCM - Digital & Analog Audio 8x8 Matrix
04.) J-Tech JTD-HD4X4-4K - 1080P @ 60Hz HDMI Video 4x4 Matrix
05.) J-Tech JTD-SPDIF-4X4 - Toslink Digital Audio 4x4 Matrix
06.) ShinyBow SB-5470 - Analog Audio/Video 4x2 Matrix

---- Displays ----
01.) Dell U2415b - 24" 1920x1200 / 16:10 Video Monitor
02.) Dell 2408WFP - 24" 1920x1200 / 16:10 Video Monitor
03.) Samsung UN32J5003AF - 32" 1920x1080 / 16:9 HDTV

---- Speakers ----
01.) PreSonus Eris 4.5 - Powered Studio Monitors
02.) Polk PSW110 - Powered Subwoofer

---- Amplifiers ----
01.) NAD 2100 - 50W/Ch Solid State Amp (for when I build some more passive speakers)
02.) H.H. Scott 299C (built: 1961-1964) - Vacuum Tube Integrated Amp ( 11 tubes: (4) 12AX7; (2) 6U8 or 7199; [Split-load phase inverter] (4) 7591; (1) 5AR4 ). It was given to me 20+ years ago, and needs to be repaired.

---- Processors ----
01.) Edwards Apprentice Phono Stage (used, from Podster on Head-Fi)
02.) SAE 5000A - Impulse Noise Reducer (for phono clicks/pops)
03.) dbx II 128 - Dynamic Range Enhancer (with dbx for tape decks)
Music Preferences
01.) Christian
02.) Celtic
03.) Renaissance (RenFest)
04.) Classical / Medieval / Renaissance
05.) Jazz
06.) Big Band
07.) Classic Rock ('50s - '70s)
Gender
Male
Gear-Fi
01.) Nikon D7200 DSLR
02.) Nikon D7100 DSLR
03.) Nikon D90 DSLR [this is For Sale]
04.) Various Nikon lenses, from 10.5mm Fisheye to 18-300mm Zoom, and a Tamron 500mm f/8 SP BBAR MC macro
Occupation
Electronics Technician (30+ years experience)

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Full list of David Baldock's -> Audio Gear ][ Useful Earphone Tests -> AudioCheck.net ][ Headphones: Beyer DT-831 / KEF Space One
Sources: Onkyo DP-X1B / LG V30 / Cayin N3 / Shanling M3s, M2s, M1, M0 / Zishan DSD, Z3, Z2, Z1 / Walnut F2, v2 / Nexus 7 / Windows & Linux PCs
Amps: iFi Micro iDSD / XRK Pocket Class A NHB / iBasso PB2 / FiiO BTR5 / Radsone EarStudio ES100 / Loxjie P20 / Little Bear B4-X / Walnut F2, F1
Earphone Favs: HotFi HM2 / LZ A4 / Etymotic ER2XR / NiceHCK NX7 / KB Ear F1 / Audio Sense T180 / Pizen PianoTrio
Earbud Favs: Blur hALF/hALF (150Ω) / VE Zen 2.0 ZOE / K's K600 / Smabat ST-10 / VE Asura 2.0s AOE / VE Monk+ SPC / RYGMR RY4S UE

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