Recent content by tony ky ma

  1. tony ky ma

    Ultraanalogue Recordings new recordings from June 11 concert

    about this recording, the mic amp had been upgraded , I add 16 caps more to the amp in by pass position each position not only one cap is carry two more smaller value cap for more signal go through , tubes are 1950's we 300b and we 437a. if you have chance to compare the analogue version (tape)...
  2. tony ky ma

    Our WE300b based tape playback amp

    I did a all tube amp direct from head, EQ by a simple passive LCR filter no calibrate (A80's section is silicon feed back type) transformer coupling and out put ( not silver copper only) very simple just like a phono RIAA amp, sound good tube use 5687 or 7119 or 6900 of cause best sounding is...
  3. tony ky ma

    Our WE300b based tape playback amp

    Hi Victor I am Tony who built the amp . the construction of A80 playback amp is in 3 parts is EQ calibrate and out put stage. the amp's in put is from calibrate part's out put before A80's volume control to a silver inter stage transformer 1:2 then 300B and a out put transformer 600 ohm output...
  4. tony ky ma

    How I made head direct out of Studers

    Out broad amp is a kind of up grade of tape recorder but how to connect to the head is a question. closer is better too far away (too long cable or weirs) will create problems. here what I did with A80RC A810 and PR99 In A80RC very simple use two extra card (pictures) to replace repro card...
  5. tony ky ma

    Ed Pong And Ultraanalogue Recordings Have Hit Another Home Run

    I have a box set (3 vinyls) of Audio Technical Records by DENON, this testing vinyl produced by professor Takeshi Itow doctor of engineering Waseda University, Tokyo Japan. the recording is for people to check their play back system, it contain sweep frequency, band noise, phasing, musical...
  6. tony ky ma

    Reel to Reel Head Wire out and associated topics

    For a general R2R consumer to enjoy pure analogue sound of music in play back, the most important things for them to do is often clearing heads' surface and tape path too and demagnetize heads . a demagnetizer will not cost too much money than a set of test tape but can give a great help in...
  7. tony ky ma

    Reel to Reel Head Wire out and associated topics

    After we placed a battery power to the repro amp of A80 to replace the stock voltage regulated power supply and found improvement but in the first try same to record amp was disappointed , there was some radio broadcasting mixed into the recording too, we found long wire and bad routing caused...
  8. tony ky ma

    Reel to Reel Head Wire out and associated topics

    I don't know how to measure difference of transparency, emotion,sound stage, sound density, etc, all I know comparison will tell about, of cause basic tuning we did every time before recording by qualify person still came out so different in each modification of transparency, emotion, sound...
  9. tony ky ma

    Reel to Reel Head Wire out and associated topics

    Hi Tang That switch is for you when in fast winding for tape will not touch heads, you no need pair of UV meter fix to amp unless you want to watch when playing. to buy a HP AC volt meter in old analogue type (from Ebay) for adjusting out put level , also you can buy two of them for both...
  10. tony ky ma

    Reel to Reel Head Wire out and associated topics

    maybe a 180 volt tube repro amp power supply in a battery supply for next step tony ma
  11. tony ky ma

    Reel to Reel Head Wire out and associated topics

    Is Studer the best in the world ? yes maybe in their golden age but by no mean it can't be improved today ! once people put their hand into the machine of modification will losing resell value but you can ask Ed will he sell his two Studer A80 in what ever of money will offer, the changed after...
  12. tony ky ma

    Reel to Reel Head Wire out and associated topics

    I am sure that is the reason, although I don't know the detail of A820 but I know A820 has same looking transport of A80 and circuitry same as A810, then I think it may also has a pre amp behind the head too and the guy modify the deck for you is place the switch selector before the repro amp...
  13. tony ky ma

    Reel to Reel Head Wire out and associated topics

    Doshi in Mike's A820 and Steve's A810 both working OK for Ed's tape, I checked with the Studer A810 service instructions the transport is no change but different year made in different electronic circuit design some with transformer but some is transformerless because of different impedance head...
  14. tony ky ma

    Is Reel to Reel Worth it to you at $450 or $500 a pop?

    It is hard to say worth $ or not, I just brought two pair of Hejiri inter connect cables back from Japan for my friend's request paid $6k but today you can only just pay under $2k for a 65" TV, tube amp came back after they completely disappeared and most Hi End market of today is tube amp...
  15. tony ky ma

    Reel to Reel Head Wire out and associated topics

    Yes he said when he play Ed's he connected A820's out put to his pre amp (line stage ) not Doshi, and he has a switch selector for head to Doshi or back to A820, and I don't know what type head in his A820, in A80 RC and A80VU has different impedance head, RC type's head has higher impedance...
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