Search results

  1. oldvinyl

    Aesthetix Io Users Group

    I have used both Io RCA or both XLRs at the same time. This is for bi-amping my speakers. No affect on sound quality that I can hear. Keep in mind that it is a standard configuration for the Io to have 2 sets of outputs. The factory can add a second XLR output too (which I have). As for using...
  2. oldvinyl

    Aesthetix Io Users Group

    Does gain affect noise? -- yes, there are three gain stages. Each gain stage amplifies (magnifies) its input signal. The input signal can be from the cartridge (music) or from the circuit components (noise). Tubes are known for "tube rush" or a soft shhhhhhhh sound. -- the Io has up to 80...
  3. oldvinyl

    Aesthetix Io Users Group

    Agreed - my experience is based on Io with volume controls. The volume control version does not have jumpers for gain setting.
  4. oldvinyl

    Aesthetix Io Users Group

    Sort of ... the Io output will still be amplified in the line stage. Any noise from the Io will then be amplified by the preamp. For the combo to work optimally, be sure to set the Io gain low enough such that the preamp actually needs to amplify the Io's output. If the Io gain is too high...
  5. oldvinyl

    Aesthetix Io Users Group

    What is the current practical thinking on using a .24mv cartridge with the Io? - go for it! - it requires careful selection of low noise and low microphony tubes, especially in the V1 and V2 first gain stage 1) Does an output that low put a lot of pressure on the Io in terms of staying...
  6. oldvinyl

    Aesthetix Io Users Group

    12AX7 tubes should be good for 10,000 hours. Adequate cooling and/or ventilation of the power supplies provide longest tube life. At 10 hours a week, that’s about 10 years. EL34 tubes are rated at 2,500 hours. The KT66 are also rated for 8000-10000 hours. so, it depends on the tube type and...
  7. oldvinyl

    Aesthetix Io Users Group

    The tubes in the first stage are critical since their signal and any noise is amplified by the two subsequent gain stages. The tubes are not stressed any more than any other gain stage.
  8. oldvinyl

    Aesthetix Io Users Group

    I have not found the Io to be hard on tubes. The power supplies run the tube heaters prior to fully powering the tubes. This minimizes thermal shock. The tubes are all run at nominal conditions, no stress. My KT66 tubes have been in the power supplies 20 years. Some of the 12AX7s have lasted...
  9. oldvinyl

    Aesthetix Io Users Group

    Being in the US, my Io doesn't need American vacations. My Io does appreciate foreign visitors such as German Telefunkens, British Mullards and Dutch Amperex.
  10. oldvinyl

    Aesthetix Io Users Group

    I haven’t had heat problems with the Io. When I lived in a warmer climate, I used small fans to keep the power supplies cool in the rack. Where we live now has a cooler climate and the listening room is in the lower level. No heat problems now. I have had the Io for almost 25 years. This is...
  11. oldvinyl

    Aesthetix Io Users Group

    I’ll have to “slum” it with my CD/SACD player and silver discs until the power supplies come back. Eager to hear what the new transformers can do.
  12. oldvinyl

    Aesthetix Io Users Group

    Please spin a few records for me. My power supplies have been sent in for the new transformers and to resolve a popping sound in one of them. My guess is that they will be there at least a couple weeks.
  13. oldvinyl

    Lloyd Walker of Walker Audio has Passed Away...

    Thanks for letting us all know. The Walker turntable is one of the products I have admired and yearned for. Lloyd was always very helpful about the use of the record cleaning products that I ordered. I will also say that he was one of those rare people that was dedicated to quality and the...
  14. oldvinyl

    PCM 768kHz! - 24bit - FREE TRACK from Carmen Gomes Inc.'s Ray! Album, Is this overkill or does it make sense?

    My recollection from communications theory classes and EE work is that the Nyquist frequency only guarantees that the reproduced signal will not be aliased. The stair step is the instantaneous voltage at the DAC output. This is also instantaneously reproduced as the sum of the sine waves that...
  15. oldvinyl

    Breaking news from DCS….

    micro strip .... macro dress ??
  16. oldvinyl

    Breaking news from DCS….

    Sorry, not my first rodeo. I keep telling myself it’s the last rodeo. I know where the Vivaldi Upsampler path leads …. new power cords, new digital cables, new HRS rack/shelves/footers,. I am actually very satisfied with my digital gear. I prefer to enjoy more music and not worry about the...
  17. oldvinyl

    Aesthetix Io Users Group

    While a matched quad is ideal, I have had great results with 2 matched pairs. It is getting more and more difficult to find well matched and quiet Telefunkens these days.
  18. oldvinyl

    Breaking news from DCS….

    Can't speak to the sanity and you are free to worry about mine for owning a Vivaldi and getting it upgraded. I found a great deal from my dealer on a demo clock and a demo transport. The DAC was full price, but there was an incredible allowance for trading up from a Rossini player (I made the...
  19. oldvinyl

    Breaking news from DCS….

    For background: I only listen to discs with the transport and DAC, I do not have the upsampler or network feed for hi-res files from a server. The transport is set to DXD for CD playback, DAC Filter 1 for SACD and DAC Filter 4 for CD. The DAC directly feeds the amps and I use the DAC volume...
  20. oldvinyl

    Aesthetix Io Users Group

    A couple thoughts - the recommended setting for the Io (if you have the volume controls) is around 11 am on the dials. That way, the preamp can turn up and down the volume. And, tube rush from the Io is minimized. If you have too much gain from the Io, then the external preamp will essentially...
  21. oldvinyl

    Breaking news from DCS….

    I got to listen to the Vivaldi Apex in my system today, back to back with my Vivaldi. Used the same CD/SACD selections at the same volume. Major impressions from the Apex - not a subtle difference. Apex had much more body and density to the sound of instruments. Apex had more of the ambient...
  22. oldvinyl

    Aesthetix Io Users Group

    Keep us posted on your listening impressions!! Also note that if you ever wanted to switch back to EL34 or KT77, you could probably purchase replacement tops for the power supplies from Aesthetix. Years ago, there were quite a few Io users sharing info on how to cut those holes in the top of...
  23. oldvinyl

    Aesthetix Io Users Group

    Kcin, Yes - the custom umbilicals can add to the performance. I have a set made by Audience. Improved wire materials help. Also, the shielding of the wire pairs and the whole bundle can be done. I would share the info - subject to permission from Aesthetix. I do need to respect their...
  24. oldvinyl

    Spectral SDR3000 Transport

    Usually, the ticks and pops are due to the clock setting. dCS configuration should use Sync Mode “Audio” as it does not have a word clock input. dCS manual has this notice: Please note if you lock one of the DAC’s AES or SPDIF inputs to a Master Clock, the source equipment (e.g. a CD player)...
  25. oldvinyl

    Spectral SDR3000 Transport

    All I can suggest is try the SPDIF and EAS/ECU to find out if they behave the same. That is curious about the distortion since it outputs a digital signal. Do other transports work ok with the same connection and cable? Have you tried a different cable? Just thinking out loud...
  26. oldvinyl

    Spectral SDR3000 Transport

    I don't have this transport and have not tried it. From a quick Google search, the Spectral site has this information: All digital interfaces on the SDR-3000 have been carefully optimized to deliver the finest performance the interface standards allow. For this reason, the SDR-3000 can...
  27. oldvinyl

    Wadax Reference Dac and Server arrive

    Agreed - there are always design tradeoffs. For all I know, Wadax has a processor core in their ASIC. For flexibility, an ASIC could easily be designed with registers to tune the filters. Filter taps can be added or removed by using an external FLASH that specifies a processing order. In other...
  28. oldvinyl

    Wadax Reference Dac and Server arrive

    The Wadax DAC error correction is in hardware - that is what their musIC ASIC is for. They inject known signals, measure end-end response through a TI DAC and compare the result with a known ideal result. Any difference is error. That error is then "subtracted" from the incoming digital data...
  29. oldvinyl

    What Brands of Headphones and Headphone Amplifiers do Fans of High Efficiency Speakers and SET Amps Enjoy?

    I use a Cary 300-SEI integrated amp and Sennheiser HD800. The WE-300B output tube driving the headphones really brings out the warmth and tone ... to my ears anyway. My amp has the Western Electric 300B's from the 1990's production run.
  30. oldvinyl

    Aesthetix Io Users Group

    I had the line level input and selector switches added to my Io quite a while back. Also had a second set of balanced and RCA outputs added for bi-amping. I tried the line input for a CD player but found the added tube rush and bass levels to not suit my tastes. I do use the additional set of...

About us

  • What’s Best Forum is THE forum for high end audio, product reviews, advice and sharing experiences on the best of everything else. This is THE place where audiophiles and audio companies discuss vintage, contemporary and new audio products, music servers, music streamers, computer audio, digital-to-analog converters, turntables, phono stages, cartridges, reel-to-reel tape machines, speakers, headphones and tube and solid-state amplification. Founded in 2010 What’s Best Forum invites intelligent and courteous people of all interests and backgrounds to describe and discuss the best of everything. From beginners to life-long hobbyists to industry professionals, we enjoy learning about new things and meeting new people, and participating in spirited debates.

Quick Navigation

User Menu

Steve Williams
Site Founder | Site Owner | Administrator
Ron Resnick
Site Co-Owner | Administrator
Julian (The Fixer)
Website Build | Marketing Managersing