Sony TA-AX6

1 9 8 1 november 1981
1 9 8 2
1982 +

First component designed for Sony by Takashi Kanai and last sibling of a fairly rapidly vanishing mini-series, the TA-AX6 carried all the hopes one could have (then) for a decade that still was to happen : sobre and elegant but High-Tech.
As it happened in the end, we got the High-Tech part -in spades- but neither sobriety nor elegance.

Looking closer, one will find several similarities with the first TA-F555ES ES integrated : the controls under the flap and their order, the source/rec-out display scheme, ACT and even most of the internal structure...
Except the 1980s ES line was about tradition being renewed while this was all about novelty : it's the very early 80s, it's bolder.

However, the guts of the TA-AX6 (Pulse Power Supply, Heat-Pipe and Hi-Ft) were as old as 1977 for Sony.
And ACT didn't survive longer than the TA-F555ES and ST-S555ES - assumed modernism is a fleeting thought.

Heart of the TA-AX6 is... one, two, three, four things : 22Khz Pulse Power Supply, Heat-Pipe cooling system, Hi-fT transistors and Audio Current Transfer.

The first we all know but raised here from the 20Khz of the TA-N86B or TA-N9 to 22Khz - better but even hotter in the end.
The second we all know as well - very efficient, lightweight and reliable.
The third is what replaced V-Fets without going over to Mos-Fets, with 80MHz cutoff frequency.

The fourth is what Sony (and JVC) were about then : converting input voltage into current so that transitors would only do what they are supposed to : amplify current.
Voltage varies but current remains fixed, for a better hold of the speakers, whatever the load, the impedance or the mood.

The rest is generally ignored because the TA-AX6, TA-AX7 and TA-AX8 mainly look like looky-looky thingies.
But inside are metal-film resistors, polypropylene caps, OFC wiring and a linear gain control which doesn't suffer a rise in resistance over its min/max course.

Also in are a moving coil phono stage with 3 Ohm or 40 Ohm settings and gold-plated terminals, Legato Linear circuit to "eliminate" switching distortion, and overall DC design.
The first production run had "aux" labeled ; the later one (shorter, late '82) changed that to "aux/CD".

Like for the earlier TA-P7F or TA-F80, the result is a super amplifier which can be had for cheap today - because of its looks.

Sony TA-AX6, image 1 Sony TA-AX6, image 2 Sony TA-AX6, image 3
Sony TA-AX6 specifications
Title Value
Power : 2x 75W (RMS, 20Hz...20Khz, 8 Ohm)
THD : 0,004% at rated power
IMD : 0,004% at rated power
Power bandwidth : 5Hz...100Khz (IHF)
Dynamic headroom : 1,8dB (IHF-1978)
Damping factor : 100 (1Khz / 8ohm)
Slew rate : 100V/µs (overall)
250V/µs (power amp)
Residual noise : 23µV
RIAA curve : ± 0,2dB
Frequency response : 5Hz...200Khz (+0 / -3dB)
Inputs : 1x Phono MM (2,5mV / 50kOhm, 50 or 120pF)
1x Phono MC (0,17mV / 40 or 3 Ohm)
1x Aux (150mV / 50kOhm)
Outputs : 1x Tuner (150mV / 50kOhm)
2x Tape (150mV / 50kOhm)
2x speaker pairs (4...16 Ohm)
1x headphones (8 Ohm)
S/N ratio (old/new IHF) : 88dB / 86dB (MM)
68dB / 75dB (MC)
98dB / 100dB (line)
Max. input capacity : 160mV (MM)
8mV (MC)
Bass controls : ± 8dB @ 60Hz (500Hz turnover)
Treble controls : ± 8dB @ 5Khz (25Khz turnover)
Subsonic filter : 6dB/oct below 15Hz
PC : 120W max.
Dimensions : 43 x 10,5 x 35cm
Weight : 6,3kg.
List price : 69,800¥ (TA-AX6)
89,800¥ (TA-AX7)
130,00¥ (TA-AX8)
Sony TA-AX6 : 2 topics
(last updated topic shows up first)
  • Wanted TA-AX volume slider !                             (4)last updated by Axel - 27/08/2013, 19H51
  • 2017 : TA-AX7                             (1)last updated by Axel - 01/10/2017, 14H12
page online since : november 2004
page updated : september 2010
page type : LGT / KNB
page weight : 176.83 Kb / 0 b

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