Sunday, June 21, 2009

Topping M1 Class "T" Headphone Apmlifier (Tripath TA2024 Chipset).

The Topping T-Amp is a so-called Class T integrated amplifier, based upon the Tripath TA2024 chip set. the chip makes use of a kind of "Digital Power Processing", this is, more or less, a Class D amplifier with a very high rate of switching . That is why they put the word "digital" into it. Actually, there's nothing really digital about it inside, not in terms of D/A conversion.

Output Power 120mW*2(32Ω)

6mm panel

Signal-to-Noise Ratio (SNR) 98dB
Dynamic Range 98dB
IHF-IM Distortion 0.1% @ 1W, 4ohm
THD Distortion
0.03% @ 9W, 4ohm

0.1% @ 11W 4ohm
0.1% @ 6W 8ohm
10% @ 15W 4ohm
10% @ 10W 8ohm
Power Efficiency 81% @ 15W, 4ohm, 90% @ 10W, 8ohm
Input Sensitivity 200mV

Audio IN RCA (Left/Right) x 1

Power socket (5.5mm/2.1mm) x 1
Speaker OUT (Left) x 1 pair (+ / -)
Speaker OUT (Right) x 1 pair (+ / -)
Power Indicator (Blue LED) x 1
Power Supply input DC 12V~13.2V5A

Weight 1kg

Saturday, June 20, 2009

6H30P-DR "Super Tube"

A double triode, this is an unusual 6922 tube variant (sometimes called the 6H30, 6N30 or 6N30P) which is used in the BAT VK-50SE pre-amp by Balanced Audio Technologies. Sovtek has purchased the factory where they were made and is now importing them for BAT owners. Even though this a variant to the 6922 tube, this tube can not be used in place of 6DJ8 or 6922 tubes in other pre-amps; it can only be used in equipment that is designed for the 6H30!

The 6H30P-DR Super tube is the absolute top grade of the 6H30 tube type. To be certified a DR grade this tube had to pass lengthy and rigorous testing meaning it is much better than the 6H30P-EB or EV versions. It's original use was in critical space and military applications within the Soviet Union. This is the same 6H30 Super tube was dubbed the Super tube by Balanced Audio Technology in use in BAT equipment. The 6H30P-DR tube is also known as 6H30P-DP and 6N30P-DR.

"6H30 Data"

Lifetime not less 10000-20000h! Highly-durable and extra long life, double triode with separate cathodes. Orginal application was for use in pulse mode in special equipment for space by Soviets.

6H30 is now used in reference level pre-amplifiers of Audio Research and Conrad Johnson to name a few.

  • Name: 6N30P-DR
  • Type: Double triode with separate cathodes, highly-durable, extended-life span
  • Application: application in pulse mode in special equipment
  • Cathode: type oxide, indirect heating
  • Envelope: glass, miniature
  • Mass,g: 20
  • Filament voltage,V: 6,3
  • Filament current,A: 0,725-0,9
  • Anode voltage,V: 80
  • Anode current,A: 0,03-0,05(3A in pulse)
  • Anode power,W: 4
  • Steepness,mA/V: 15,0-23,0
  • Microphnic noise,mV: 50
  • Gain: 12,0-18,0
  • Socket type: rsh8
  • Sunday, June 7, 2009

    Elekit TU-884CB 12AU7 Tube Output CD Player.


    立解説ダイジェスト版 Elekit (Japan) CD

    Player Kit with 12AU7 Tube output:

    ELEKIT TU-884CD Test

    Poem: Intolerant Egotistical Old Man.

    Today I met an intolerant
    egotistical old man so proud
    and so full of himself that he
    could not see right from wrong.

    So filled with notions that only
    what he could see as far as his nose
    was right and true no matter
    how wrong he may be.

    I felt sorry for this old fart,
    since he will not be able to mend
    his ways since his days he
    would be counting.

    Sorry that he has fewer and
    fewer friends, his insolence so
    overpowering like the stench from
    an age old sewer.

    For he cannot see, even
    with his reading glasses, these would
    not help since his mind is shut.
    Shut from all truths.

    He is purging his life,
    purging his life away of all friends and
    acquaintances because he is
    so filled with his own selfish
    and egotistical beliefs.

    He is right and everyone
    is wrong, if that were true
    then let me be counted by
    him amongst those in the wrong.

    As I do not want to become
    an Intolerant Egotistical Old Man
    like him alone in his last