So what other wireless headphones have you tried? What did you end up buying?

I am looking for a working HEV70 amplifier with a genuine Sennheiser EU or NA power adapter. Do you or someone you know have one of these for sale? Must be in excellent working condition? Cosmetic scratches, blemishes, and so on, are no problem... Please simply reply via PM with details and...

gleanfont - very kind and thoughtful of you to reply. All is well. Thank you!

... especially, if you also happen to be a member of canuck audio mart, then could you please send me a PM and I can provide all the details. Thanks in advance!

WTB: Variants of 300B tubes and specific 300B and other vacuum tubes. AD100: Singles or Pairs (preferred) by AVVT (Vaic) 32B SL: Singles by AVVT 320B SL: Singles by AVVT As to actual 300B tubes, please let me know if you have any of these: -- Svetlana Electronic Devices (SED), JJ Electronic...

WTB: Variants of 300B tubes and specific 300B and other vacuum tubes. AD100: Singles or Pairs (preferred) by AVVT (Vaic) 32B SL: Singles by AVVT 320B SL: Singles by AVVT As to actual 300B tubes, please let me know if you have any of these: -- Svetlana Electronic Devices (SED), JJ...

This just in from T.H.E. Show Team! I've cut and pasted it from a notice, which was forwarded to members by the president a SoCal audio club. Fingers crossed it proceeds as scheduled! Cheers! ~~~~~~~~~~ T.H.E. Show announces dates for June 11-13, 2021 at the Hilton, Long Beach, CA January...

Greetings, Was doing some e"Harbor" browsing and came across a listing for the above noted Bottlehead offering and began to wonder if anyone has ever directly (or not) compared it to one of two oldies (and definitely goodies, especially if they've been upgraded to address all the known issues)...

An update: As stated in my OP, we are looking to potentially replace the stock opamp (TL074 by Texas Instruments), in an amp that was designed to be used only for a specific set of electrostatic headphones. According to our very capable fellow member and DIY contact, A2029, come of our...

Ideally one who: -- is currently available and welcomes inquiries about taking on commissions, AND -- has extensive experience building and repairing amps for electrostatic headphones. Please send a PM with details. TIA!

Harry Manback - Really appreciate you submitting a reply. Also, love the quotes in your signature! Thank you. Can you please provide more info in order to get a better perspective and clearer context on your experience with the TI opamp you are suggesting. For example: 1. How did you come...

Tomb: Meet fellow member A2029! He is the one assisting me to see just how much the performance of a stock HEV70 amp can be improved when powering the HE60. Thanks again to you and others for providing some very helpful info. I will be officially in A2029's job cue the moment the HEV70 is in...

tomb - Such good stuff you've provided there!!! Also, really appreciate your referring us to fellow member Tangent! In one Sunday afternoon swoop you've managed to not only uncover, but also outline AND prioritize how we're going to tackle the HEV70 amp. I mean... it's chilling how you approach...

jamato8 - all great points and considerations. thank you!

E8ArmyDiver - If your suggestions are compatible and will fit in the opamp sockets as suggested by jamato8, then we look forward trying them.

Bump... any assistance from members with some experience rolling opamps would be greatly appreciated. TIA

Dear members, I was referred to this sub-forum as in case some of you have extensive experience with opamps... The topic recently got my attention when a fellow member and experienced and successful DIY builder of a number of different types of amps commented on the op-amp TL074 from Texas...

Dear Trogdor - Interesting.  I understood that although files higher than 16/48 are accepted, they are downsampled to 16/48.  Is this correct?    As to the HM-801 // iQube V2 DAC, the question raised was if the iQube was capable of receiving files > 16/44.1, and it does not.  Are you...

An iQube V2 owner just confirmed offline that it only does 16/44.1 and only via USB.  So redbook/CD quality files is the highest resolution possible when doing DAC comparisons between these units.    So has anyone done these comparisons?

After more research it appears that a direct comparison of these players' DACs may not be possible when 24/96 files are used.  The answer to the question below, relative to the originally proposed methods of comparison, will be most helpful.  It would be great if someone can reply with the...

From continued searches, I found the related and helpful threads listed below.    http://www.head-fi.org/forum/thread/492634/hifiman-hm-801-dac-performance   <--- Hifiman 801: How does it compare to traditional usb amp/dac combo's?  ...

Has anyone compared the DAC of these highly regarded portable gear?  Or, has anyone done the DAC comparison in a more casual, less formal way?  Please comment even if the HM-801's DAC was compared to that of different portable dac/amp units.  Thanks.

I did a few searches and could not find a post detailing a direct comparison of the DAC performances of these two units.  OK, some of you may be shaking your heads and asking something like, "Who cares?"   I admit the question is more academic and disregards important factors like...

dear xabu - thanks for finding that firmware link!  i guess i got tired of reading that thread and just plain forgot about the great search feature.  regards. 

Can someone please provide the link from which one can download the latest firmware for the HM-801?  Also, it would be great if a member can detail how to update the firmware on the player itself?  I gave up after reading 8 or so pages of the 28 page (YIKES!) firmware debug thread.  Thanks in...