| Portable Headphones, Earphones and In-Ear Monitors Discussion of portable headphones, earphones and in-ear monitors (IEMs). |
03-09-2007, 03:14 PM
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Headphoneus Supremus
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Join Date: Mar 2002
Location: South PHILA PA
Posts: 6,136
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Yuin PK1-PK2 appreciation thread
OK both the pk1 and pk2 but must own one or both of them. My PK1 with the Little Dot II++ tube amp sound just fantastic and better than many full size headphones that I have owned. The PK1 are so very small and ultra light and have a very big sound with the full spectrum of sound.
The only thing that confuses me is the ohm-age that says 150+20. What does that mean. LOL
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03-09-2007, 05:09 PM
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100+ Head-Fi'er
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Join Date: Jan 2007
Location: San Diego, CA
Posts: 101
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I listened to my Pk2 for a bit last night, and I'm pretty sure they're a keeper. Had them burning in with pink noise overnight on Nankai's advice, and they'll get more time today.
The J-cord on my Pk2 was bothering me so I turned it into a pseudo Y-cord with black electrical tape. Looks funny, but is much more convenient 
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03-09-2007, 05:54 PM
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Headphoneus Supremus
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Join Date: Sep 2004
Location: San Jose CA
Posts: 12,519
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Here are my impressions of the PK1.  It is a very good sounding portable phone... don't let its looks fool you.
http://www.head-fi.org/forums/showpo...12&postcount=3
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03-09-2007, 05:59 PM
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500+ Head-Fi'er
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Join Date: Mar 2005
Location: Bloomington, IN
Posts: 599
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Got my Pk2 last night and I love them. I was going to sell them because I bought another pair of KSC75 for my running needs, but after listening to them last night I think they're going to be sticking around 
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03-09-2007, 06:07 PM
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Headphoneus Supremus
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Join Date: Mar 2002
Location: South PHILA PA
Posts: 6,136
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kramer5150
HI: You are the mod man so lets go. MOD MOD MOD. The PK1 of course. LOL
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03-09-2007, 08:12 PM
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Headphoneus Supremus
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Join Date: Sep 2004
Location: San Jose CA
Posts: 12,519
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No appreciation?.... they sound so GOOD people are speachless .
Lou has actually kept them for a week, thats gotta be worth something 
No need to mod perfection... just add a little bass boost/EQ on my PPA and soak up the tunes. Those who amp adequately will be rewarded.
__________________
Happy Listening!
The Kramer Tune of the Day
Stone Trek, My favorite Prog-Rock FM radio show
My Gear Profile
My Feedback Profile
The Grado Labs virtual tour
Headfest 2007 Videos
-Day1-
Six Degrees of Headfest
Texas Vibe
Takes My Breath Away
Freeborn Man
-Day2- Narrated by yours truly
Day2 Part1
Day2 Part2
In my CD Player:
Dreamtheater, Queen, Rush, Marillion, Iron Maiden, Deep Purple, Dio, Queensryche, Kings-X, Jethro', Yes, Primus, Eric Johnson, Liquid Tension Experiment, Junior Brown, Moody Blues, The Beatles, Styx, Asia
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03-09-2007, 08:18 PM
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Headphoneus Supremus
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Join Date: Dec 2006
Location: Milano - Italy
Posts: 3,316
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How much would I have to spend on amp to get a very very good sound out of the PK1s?
__________________
Main rig: Museatex Melior Bitstream (Rev1 Upgrades) -> Stax SRM-717 -> Stax Spritzer-404
Under construction: Bitstream -> CKKIII -> Woodied Fostex T50RP (still waiting!)
Portable rig: Cowon iAudio 7 -> Altec Lansing iM716 (on the way), Etymotic ER4S (back from customer service)
Impressions about the headphones I owned
MY FEEDBACK
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03-09-2007, 08:21 PM
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Head-Fi'er
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Join Date: Jul 2003
Location: Sacramento, CA
Posts: 66
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I got my PK1 earlier this week and...
Wow. 
Wow.
Wow.
Wow.
Amazing earphones. Worth every penny, and then some. With an Entech 205.2 and Perreaux SXH1, I'm actually getting a lot of bass. 
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Too many headphones, not enough ears...
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03-09-2007, 08:36 PM
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Headphoneus Supremus
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Join Date: Sep 2004
Location: San Jose CA
Posts: 12,519
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Quote:
Originally Posted by antonyfirst
What will I have to spend on amp to get a very very good sound out of the PK1s?
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Sure... my keys for budget PK1 synnergy
Take your basic CMOY...
Power it with two 9V cells, 470uFd, 25V caps wire them in series and virtual ground the node between the cells. Read the tangent page and the segment on virtual grounding. This is the same power scheme used in the $375 RA1, although the RA1 uses tiny power caps.
Moderately high gain ~7-10, this will vary though depending on the output strength of your source.
Bypass the R5 resistor.
Skip any input filter capacitance if at all possible. This will vary depending on the OP amp and the DC output of your source. Always measure the DC offset of your amp though before plugging in your cans, just to play it safe.
Socket the OP amp and roll OP amps to taste. I like the OPA2107, but preferences can vary greatly. I'm still experimenting with OP amps myself, there are so many to choose from. I'd like the bass kick of the 2107, but with a more open / spacious sound. The 2107 sounds a little more closed in... IMHO.
Stay away from low bitrate MP3, the PK1 will punish those who don't .
__________________
Happy Listening!
The Kramer Tune of the Day
Stone Trek, My favorite Prog-Rock FM radio show
My Gear Profile
My Feedback Profile
The Grado Labs virtual tour
Headfest 2007 Videos
-Day1-
Six Degrees of Headfest
Texas Vibe
Takes My Breath Away
Freeborn Man
-Day2- Narrated by yours truly
Day2 Part1
Day2 Part2
In my CD Player:
Dreamtheater, Queen, Rush, Marillion, Iron Maiden, Deep Purple, Dio, Queensryche, Kings-X, Jethro', Yes, Primus, Eric Johnson, Liquid Tension Experiment, Junior Brown, Moody Blues, The Beatles, Styx, Asia
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03-09-2007, 08:47 PM
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Headphoneus Supremus
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Join Date: Sep 2004
Location: San Jose CA
Posts: 12,519
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Quote:
Originally Posted by GChow
I got my PK1 earlier this week and...
Wow.
Wow.
Wow.
Wow.
Amazing earphones. Worth every penny, and then some. With an Entech 205.2 and Perreaux SXH1, I'm actually getting a lot of bass. |
I cant wait to try my PK1 with my entech 502. I just sent it to another member to repair and mod.  ... I just hope I didn't screw it up beyond repair  and the other member can revive it 
__________________
Happy Listening!
The Kramer Tune of the Day
Stone Trek, My favorite Prog-Rock FM radio show
My Gear Profile
My Feedback Profile
The Grado Labs virtual tour
Headfest 2007 Videos
-Day1-
Six Degrees of Headfest
Texas Vibe
Takes My Breath Away
Freeborn Man
-Day2- Narrated by yours truly
Day2 Part1
Day2 Part2
In my CD Player:
Dreamtheater, Queen, Rush, Marillion, Iron Maiden, Deep Purple, Dio, Queensryche, Kings-X, Jethro', Yes, Primus, Eric Johnson, Liquid Tension Experiment, Junior Brown, Moody Blues, The Beatles, Styx, Asia
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03-09-2007, 09:24 PM
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1000+ Head-Fi'er
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Join Date: Jul 2003
Location: San Diego/Los Angeles, CA
Posts: 1,478
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Quote:
Originally Posted by kramer5150
Stay away from low bitrate MP3, the PK1 will punish those who don't . |
Some of my MP3s are 192kbps. Do you think that the PK1 will punish those?
__________________
Sources: Enpower ENP611 Laptop (Realtek HD Audio ALC260) » iBasso D10 | iRiver iHP-120 | Apple iPod touch 2G | SanDisk Sansa Clip | Samsung YP-Z5 | Sony VAIO Pocket
Amplifiers: iBasso D10
Headphones: Westone UM3X | Westone 3 | Koss KSC35/75/50
Gone/Unused: STAX SR-Λ/SR-404/SR-Λ Pro | Denon AH-D2000 APureSound | Sennheiser IE8 | M-AUDIO IE-40 | Sennheiser HD 25 | AKG K 81 DJ | Sleek Audio SA6 | Klipsch Custom-3 | Klipsch Image X5 | JAYS q-JAYS | Shure E500PTH | YUIN PK2 | Future Sonics Atrio m5 (x2) | SoundMAGIC PL30 | V-MODA Vibe | Sennheiser CX300 | JBL Reference 220 | Ultrasone HFI-650 | Audio-Technica ATH-FC7 | JVC HA-FX33
Feedback: Head-Fi | eBay
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03-09-2007, 11:43 PM
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100+ Head-Fi'er
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Join Date: Nov 2002
Location: LosAngeles Califas Aztlán
Posts: 151
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I am loving my PK2. I'm listening to mine with Radio Shack pads on my shuffle and I'm amazed by the treble extension and clarity these phones have. Very big sound from a small pair of phones.
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The bogeyman does not exist
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03-10-2007, 01:43 AM
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500+ Head-Fi'er
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Join Date: Oct 2006
Location: BKK Thailand
Posts: 594
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Besides superb sound quality for their prices, Yuin still have much to learn in order to maximize their potential in global markets. For example, looking at their package design I am sure they aim high. All are there; pricey materials, labor intensive box and jacket, and ample accessories. Their packaging is costly but it does not provide much preferable effects. Call it cross-cultural issue or whatever but this need to be dealt with.
One good news is they actually listen to customers and respond fast. Switching Pk2 to "Y" cord clearly shows that. If this continues, our feedbacks and suggestions here will help Yuin make even better phones so, keep it coming, people.
Yuin means "heavenly sounds". I am pleased to say they do live up to their name.
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rebuilding
Team Indecisive! :D
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03-11-2007, 05:15 PM
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100+ Head-Fi'er
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Join Date: Oct 2006
Location: Winnipeg, MB, Canada.
Posts: 303
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How were the waiting times after ordering for you guys? How long did it take you to get em'.
__________________
Setup: Creative SoundBlaster X-FI XtremeMusic --> Music Fidelity X-Can V3 (or JVC UX-A5) --> Beyerdynamic DT770-250 (or Grado SR60, or KSC75).
Current Music: Coldplay - X&Y
Waiting for: Payday.
For sale: Currrently nothing.
Feedback: Here.
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03-11-2007, 06:42 PM
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Headphoneus Supremus
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Join Date: Dec 2003
Location: Philadelphia, PA USA
Posts: 1,831
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Quote:
Originally Posted by antonyfirst
How much would I have to spend on amp to get a very very good sound out of the PK1s?
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My absolute favorite amp with the PK1 is the Go-Vibe V6 with AD8397/AD825 opamps, run at 12V. Unfortunately, the Go-Vibe V6 with those opamps are only available used at this point. I'm waiting for a Go-Vibe V6 with AD8620/10 opamps that I ordered to arrive to see how it compares. But, the Go-Vibe V6 I've got with the PK1 produces no less than what I would describe as an amazing sound. Price of a Go-Vibe V6 with shipping: $105. With a 12V PSU for stationary listening: $130-ish. Along with the quality/price of the PK1, that's not a lot of money for that good a sound. With the GV V6 change in opamps to AD8620/10, you may find the GV V6 with the first opamps (AD8397/AD825) coming up on the FS Forum.
__________________
Offline Rig: Pioneer DV563A, DV578A (VD David 1.0 PC) -> Sonicwave Glass Toslink -> Headroom 2007 Ultra Micro DAC (Desktop PSU, VD Nite II PC) -> VD Master 2.0 IC -> stock Purity Audio KICAS Caliente -> Senn HD650 (ALO 18AWG Jena Cryo cable), Yuin PK1, Ultrasone ALO-780
Computer Rig: Creative Emu 1212m (IeGO 70530 PC) -> Glass Toslink-> Same downstream as Offline Rig
Work Rig: iBasso D10 (Topkit) (USB DAC/Amp) -> Yuin PK1, Shure SE530
Bedside Rig: 5.5G RWA iMod -> ALO VCap Dock (VHAudio OIMP) -> Zynsonix Eys mini-to-RCA -> ALO/RWA Amphora (iMod version), Mapletree Ear+ Purist HD (VD Nite PC) -> Ultrasone ALO-780, ALO-Modded SR225 (18AWG Jena Cryo cable), SE530, HD600(Cardas)
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