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  1. Ferbose

    Zoom U-44: all-in-one solution for computer audio and surprisingly sweet sound

    After purchasing Zoom U-44 for 6 months, I can't believe I am writing a review to describe how good it sounds. Here is why I highly recommend it for computer audiophiles. (1) Unbeatable functionality, a swiss-army-knife for all audio needs Computer audio interface: 96/24, USB, 4-in-4-out...
  2. Ferbose

    Marvalve Tube Headphone Amplifier

      I am sure this amplifier is dead quiet. It has only one EL84 tube running at low voltage. It could be the tube that needs replacing. On any tube amplifier, I always use ultra-sensitive ear buds to check tube noises. Both preamp and power tubes could vary widely in noise levels, including...
  3. Ferbose

    Hifiman HE-560 vs LCD-3 vs HD800 vs K812 -- quick impressions

      Great comments. Thanks for sharing. Any thoughts on Beyer T1? 
  4. Ferbose

    Hifiman HE-560 vs LCD-3 vs HD800 vs K812 -- quick impressions

    Having heard some old-time goodies like Sennheiser HE-90, Stax Omega II and Sony R10, and owning 5 pairs of AKG K1000 currently, I have not been particularly impressed with the previous generation of flagship headphones (HD650, K702, DT880, some woody Audio Technicas) for playing classical and...
  5. Ferbose

    A nice new DAC2 from Benchmark showing at RMAF

    I bought DAC1 almost 9 years ago and never liked the built-in amp, being kind of lifeless and not particularly high-resolution, easily beaten by a Ray Samuel's cheapest portable amp. But the converter is great and I keep using it for years without bothering to upgrade.   Now it looks like...
  6. Ferbose

    First Look: Minute EL34 SE Headphone Amplifier from SAC Thailand

    The headphone amp is a readily available model only sold in Thailand. I would email info@sacthailand.com to have it shipped to the US. Mine has been operating just fine. It's a great amp.     Quote:  
  7. Ferbose

    K1000 and RATTLE!

    When there is really strong low bass, maybe <30-40 Hz, I can hear a rattle in 3 out of 4 pairs that I have right now, on one channel only (left or right depends on the pair). Three are in mint condition. Because the ear is not as sensitive to really low bass, it may not sound loud but in fact...
  8. Ferbose

    First Look: Minute EL34 SE Headphone Amplifier from SAC Thailand

    It's great to know the person who conceptualized the Minute EL34 headamp, Kanit. It is a brilliant idea, and the transformer for electrostatic headphones as well. w clean it sounds while driving the speaker.   Today I received new speakers today, ERA D4. I had to upgrade because my...
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  12. Ferbose

    First Look: Minute EL34 SE Headphone Amplifier from SAC Thailand

      It is great to hear from headphiles in Thailand. I could not find much information about the Minute amp in English websites.   So what do people think about Minute EL34 vs 300B amps? I don't have a 300B amp with me so I cannot compare directly, only from memory.   Even more...
  13. Ferbose

    First Look: Minute EL34 SE Headphone Amplifier from SAC Thailand

      This is a first peek at a new single-ended tube headphone amp from SAC Thailand.   The Minute EL34 headamp is a brand-new model not yet advertised on the manufacturer's website and I am the first owner in the US. It is so amazing that I feel compelled to let everyone know about it...
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  22. Ferbose

    Cayin HA-1 as amp for K1000

    Quote: Originally Posted by Gradofan2 Maybe... but... AKG techs suggest a speaker amp with a minimum of 30 watts into 8 ohms is the minimum required to drive the K-1000s to their potential. Why mess around with anything less than what AKG recommends? Why invest so much in ear...
  23. Ferbose

    Amp problems, strange noise. help!

    Quote: Originally Posted by compuryan I actually tried a RCA 12AT7 in the 12AX7 position and I very much prefer the Sovtek 12AX7LPS. The RCA sounded tired and flabby in comparison. I forgot I am using K1000 and you are using HD650. HD650 has a veil that needs an exciter, K1000...
  24. Ferbose

    Amp problems, strange noise. help!

    To continue my trial for tone modifications using lower-gain tubes, I tested 6 old production 12AT7 tubes from Ebay. The are probably used but test from good to strong, with 2 RCAs in original box. Not surprisingly, I like 12AT7 (gain =60) in general over 5751 (gain=70) in the 12AX7 (gain=100)...
  25. Ferbose

    Amp problems, strange noise. help!

    I have rolled a lot of tubes with Cayin HA-1A, and still trying new tubes. My latest experiment is to use European old 12AY7 and old GE 6829 for the 12AX7 position. Just got them from Ebay. For the EL84 position, before you spend big bucks for NOS, try the Russian military NOS 6P14P-EV. In my...
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