I have been following this thread for a while but I don't believe I have read any comparison for those who are using the usb input (or a usb transport) between upsampling and no-upsampling with the Schiit Yggdrasil.    As an owner of the NOS (non-oversampling) Metrum Octave MKII, I have found...

  Indeed, Glenn makes the amps one by one and all of them are Special :)   As for the tube rolling, I should be getting the following in the coming weeks : - A Sophia 6SN7 (grade A) - A set of GE 6BL7s - A 5AR4 rectifier tube - A 5AU4 rectifier tube   I have yet to try the 6336As. Is...

  Hi punit, I suspect that price / performance ratio of Glenn's amplifier is exceptionally good. Though, given that I did not have amplifiers costing more, I could not attest about that.   Also, whenever I am reviewing a piece of gear, I try to forget about the price and try to describe it...

Thanks guys for the nice comments!

  Thanks for the kind words! I just hope it did justice to Glenn's fantastic amplifier.

  I forgot about stair-stepped issue... However, it seems that (some of) our ears are able to smooth out those sine waves very efficiently :)   As for the PCM1704uk, I tried 0x oversampling (NOS) vs. 8x oversampling on the audio-gd dac19DSP and I preferred the sound with oversampling. At...

Hello everyone,   I have just posted a review of Glenn's amplifier here: http://www.tweak-fi.com/apps/blog/show/42754587-building-a-reference-system-part-2-glenn-s-headphone-amplifier   The version of the amplifier I have is the one that allows the use of six-6BL7s as output tubes.   Below...

  Thanks for clarifying the upsampling point.    With regards to DSD vs. PCM, I think that it might be easier overall to construct a DSD   Below is supposed to be a comparison of impulse responses of various formats:      It is clear, from comparing different impulse responses, that...

  Hi Mike,   I am glad you enjoyed reading the review. It also seems that we share a pretty similar view on how the Octave MKII sounds :)   What I have learned these past few years that it can take a very long time to get a complete understanding of how a component sound as you have...

For those who are interested, I have just post a full review of the Metrum Octave MKII here: http://www.tweak-fi.com/apps/blog/show/42726063-building-a-reference-system-part-1-metrum-octave-mkii-nos-dac   When using the Octave MKII in combination with the Audiophilleo 2, Glenn's OTL amplifier...

      My favorite quote from him : "Everything in Audio is sublte and not worth it"

The silver painted disc is a herbie's audiolab stabilizer - it is supposed to help tame vibration. I didn't do any A/B testing for sound quality but I have found it to be somewhat effective at reducing microphonics (?). When I put the amp on top of the marble tile, anything that would touch the...

Hi everyone,   I received Glenn's OTL amplifier a few weeks ago (see picture below) and I have been enjoying it very much... so much that I didn't have time to write much lately :)     I posted some preliminary impressions on my blog (tweak-fi), but here is a copy of what I wrote using...

Happy thanksgiving to you, Stavros and all the tube addicts !

  The amplifier looks fantastic! I am very thankful to Glenn for accepting to build me such an amplifier.    Also, many thanks to Stavros who has been pointing me to some very interesting 6SN7 tubes while waiting for the amp to be finished. So far, I have ordered a Sylvania 6SNGT VT231 and...