The voltage buffer IC's on the Buffalo32s usually run pretty warm so the latest mod was to add a resistor on the output to the positive rail, the resistor acts as a CCS so it gives the op-amp an easier time
It works well, the chip runs cooler , the zener is a little higher than the output of the voltage on the buffers out but lower than the chips max rating, its mainly just a safety thing
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Cheers,
Leo
Location: Ireland
Posts: 201
I'm John.
Leo,
I would highly recommend a Musiland 01USD USB to SPDIF converter - will do 24/192 asynchronous. It sounds great stock but if you're in the mood will respond well to some modding - external PS (great mod) & I'll be trying a change of the 24MHz crystal soon.
I have modded a 01US which contains an internal PCM1793 DAC - details here: http://www.diyaudio.com/forums/digit...ml#post1955840
Oh, BTW, I haven't visited this forum since summer & only now picked up your PM to me - reply sent (if it's not too late)![]()
I've been looking at the Musilands ta, think I'll give one a try .
Its a shame the US version doesn't have co-axial out so I think I'd try the USD version and try some mods
I had an email this morning saying you tried to send me a PM but my inbox was full, anyway I cleared a load out again now![]()
Cheers,
Leo
Location: Ireland
Posts: 201
I'm John.
There are some great options around now for high res USB to SPDIF conversion:
There is a comparison of 4 different USB to SPDIF units in which rates them in the following order of preference:
- M2Tech Hiface
- Teralink -x
- Musiland 01USD
- EMU 0404 USB
The M2Tech uses 2 different low jitter clocks and some jitter test have been performed here: http://www.head-fi.org/forums/f46/us...ml#post6063226
Hope my PM got through?
Last edited by jkeny; 25-10-2009 at 13:37.
Hmm, so we now have a few interesting looking options, thanks for making us aware of those, time for some reading I guess
Afraid PM didn't get through although it should be in your sent folder so could always forward over![]()
Cheers,
Leo
Location: Ireland
Posts: 201
I'm John.
I resent the PM. Leo!
Explain please.
{Edit: Sorry, I see that you meant 're-sent' rather than resent - I was a bit worried for a moment, there!}
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. Power Amps: Tube Distinctions Copper Amp, fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.