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  1. analogsa

    Innuos Statement: Nextgen vs Non-Nextgen

    In addition to the chokes the pictures show different approaches to rectification. The Nextgen has replaced the multiple TO220 diodes with synchronous rectifiers, a significant step forward in SQ imho.
  2. analogsa

    Atma-Sphere Class D Mono blocks

    Not Ralph here, but also find the topic interesting. Non switching amps at least, are very sensitive to being loaded. If you measure the unloaded voltage output of practically any amp you would be amazed at how low the distortion is. Once current starts flowing though, the picture changes...
  3. analogsa

    Audio Note UK vs Audio Japan Sonic Differences

    It was not a critique, just an observation. Replacing the coupling caps is not optional as the leakage they eventually develop can take a tube and even the output transformer.
  4. analogsa

    Audio Note UK vs Audio Japan Sonic Differences

    This particular pair is perhaps not a great illustration as it has clearly been modified with russian coupling caps.
  5. analogsa

    The Devil is in the Detail

    I don't believe this was the result of a conscientious effort, it just reflects what the technology was able to offer at the time. Often, the technological deficiencies were overcompensated with artistic mastery at all stages of record production. Today, we certainly have more choices. If it...
  6. analogsa

    Are any JBL Speakers made today Enjoyable to guys who like the older JBL models

    One more vote for 4367.
  7. analogsa

    Noteworthy attempts to advance level of audio reproduction

    Commendable effort for what? To parody tubes? It's just a silly gimmick.
  8. analogsa

    Who are the most popular hi end speaker brands?

    Amazing? What about colossi like JBL, Tannoy, ATC?
  9. analogsa

    Redbook 44.1 kHz standard: theoretically sufficient timbral resolution?

    There are no harmonics of recorded audio above 22.05kHz in redbook, just noise. Not sure if passing it through the amplification chain is a great idea, let alone torturing the tweeters.
  10. analogsa

    Popularity of a step-up transformer?

    The ST70 is an entry level device. Impossible to draw any conclusions about SUTs in general based on this experience.
  11. analogsa

    Advice/Tips for bi-amping

    The safe choice always is to use identical amps for bi/tri amping. I suppose if the bass crossover frequency is really low and the cut off order high, timbral differences between different amps won't be too obvious. Apparently many people are not overly sensitive towards the issue and...
  12. analogsa

    Our WE300b based tape playback amp

    What? Bypass all those indispensable 5532s? :cool:
  13. analogsa

    Analog Pre-amplifiers in a Digital Streaming World

    For some reason a separate box with no justifiable tecnical function, placed between dac and power amp, adds a lot of musical goodness if properly designed. Perhaps the separate from the dac PS and the physical remoteness help reduce rf noise. The majority of decent dacs have volume controls...
  14. analogsa

    To switch or not to switch? Melco S-100 or Innuos Phoenix NET switch?

    "very expensive test equipment" is fortunately quite common. The only place it makes sense to take measurements is at the input of the actual converter circuit, usually an i2s signal. Don't you think this has already been done a few times at all levels of resolution?
  15. analogsa

    To switch or not to switch? Melco S-100 or Innuos Phoenix NET switch?

    No idea why any of this should be important. A large number of dacs use a substantial fifo with a subsequent reclocking and there is no reason the specifics of the transport mechanism should play any role as far as data integrity and correct timing are concerned. Which leaves noise as the only...
  16. analogsa

    Atma-Sphere Class D Mono blocks

    Obviously at the Dartzeel's supply voltage rail it is not possible to run class A using a single output pair and adding more pairs together with unavoidable current sharing resistors will turn it into a different amp. But it is very easy to do this in a simulator. Raising the idle current from...
  17. analogsa

    Atma-Sphere Class D Mono blocks

    No NFB for the output stage, not even local. Plenty of loop NFB in the voltage gain stage. The result is very high distortion compared to most SS amps and an ugly distortion spectrum but still musical and detailed sound. As the output transistors are not under a feedback loop, distortion does...
  18. analogsa

    Atma-Sphere Class D Mono blocks

    It seemed it was a general discussion of Atmashere's class D vs Tubes, not vs the tiny tube amp segment called OTLs. Comparing Atmashere's OTLs to their own class D does indeed make sense. Now that i think about it, OTLs and class D are similar in many ways, even audibly. My objection was...
  19. analogsa

    Atma-Sphere Class D Mono blocks

    Not sure why class D amps are compared to tube amps. Wouldn't comparing them to similarly specced SS amps be far more sensible? Tubes do certain things better than non-switching solid state and vice versa, there simply cannot be a universal winner.
  20. analogsa

    Spectral DMC 30SS - how to increase Tape Output Pots to Maximum ?

    Could you post pics of the pots in question? If those are the blue ones with a yellow screw head I see, then they are simple single turn pots. Turning them clockwise to the end will ensure maximum gain. The same is true for multiturn pots too, only those require 10 or 20 complete turns to reach...
  21. analogsa

    Power Cords on Motor Controllers

    I have a related mysterious observation :) The phasing cap used in synchronous motor turntables is critical for sound. Interestingly, not so much the precise value, as the type. Capacitors I like for coupling duties also sound good to me on motors and retain the same character.
  22. analogsa

    Power Cords on Motor Controllers

    No commutator brushes found in turntable AC motors, only in brushed dc motors. Little doubt power cords make a difference, but I seriously doubt the explanation is so simple.
  23. analogsa

    Why do I hate jazz ??

    There probably is something to this. I didn't particularly enjoy jazz until I turned 18 and rock jazz helped a lot with the transition. As did Zappa :)
  24. analogsa

    Tapes Versus Ultrasonic Record Cleaning Machines

    What would happen at one foot?
  25. analogsa

    Why do I hate jazz ??

    Why? My earliest musical memories at 4 or 5 relate to parents playing incessantly Carl Orff and Boito on an ancient tube R2R through it's built in speakers. Seems to have worked.
  26. analogsa

    Why do I hate jazz ??

    What exactly is included within you classical preferences? Bach to Brahms? Do you listen to mid/late 20-th century classical, or do you draw a line at Stravinsky and Bartok? What do you call jazz? Early jazz? Big band era? 70-s rock jazz?, ECM? Avantgarde? Not sure how one can make general...
  27. analogsa

    Abbas phono

    There is some truth to this. Of course Abbas is also aware of the dangers and has still chosen to use a pcb. I can only speculate about his motives, but making assembly faster and easier does not appear to be among them. Using hand made wirewound capacitors and painstakingly maintaining correct...
  28. analogsa

    Your All Time Favorite Preamplifiers?

    This seems very unlikely. Completely different philosophies there. The pic does not show any parts manufactured later than around 1980 and lots from much earlier times.
  29. analogsa

    Magnetic Resonance control

    Very cool. Thank you! Motorcycle seating? Several cushions? Ah, ok, found a large one :)
  30. analogsa

    Magnetic Resonance control

    Could you please expand a bit upon the construction, not much is seen from the pic. And why are there spikes too?

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