Luxman C-06a

October   1 9 9 0 october 1990
1 9 9 3 1993

An extra-rare item outside Japan but an extremely common preamplifier in Osaka, Tottori and Kanazawa.

Mostly, an all-stage differential amp configuration was added to the C-06 's Duo Balance Amp balanced circuit as the previous system proved to (sometimes) (depending) induce high frequencies phase-shifts.

The low-impedance end outputs remained the same : positive phase (4x rca + 2x xlr) and negative phase (2x rca) ; their impedance was maintained at 16 and 8 Ohm ! These multi-outputs were mainly meant to power a pair of M-06 or M-07 as monoblocks. Pricey, but well worth the expense.

Also added were more secondary windings to supply independently the 34 relays and front LEDs, complete chassis copper-plating, better RCA terminals, 6N wiring and, as for the M-06 vs. M-06a, a fair amount of hand-applied copper shielding atop the caps.

The Ultimate Attenuator wasn't touched : same 4-gang fixed-resistor box, as used in all late-Alpine & Azden periods : 4x 32 resistors soldered on glass-epoxy PCBs with non-magnetic wiring and enclosed in a diecast enclosure.

According to the published specs, there's a 0,003% increase in distortion (compared to the original C-06). I could live with that ;-)

Attention, beware : the C-06a, like the C-06 has no phono stage : E-06 or E06a necessary !

The original C-06 cost 260,000¥, the 06a 380,000¥ but the increase was obviously audible and that's why the 06a sold much better.
With an M-07 (or two), this is my non-Sony "dream" preamplfier.



A real C-06 here ; a real C-06a here.

Luxman C-06a, image 1 Luxman C-06a, image 2 Luxman C-06a, image 3
Luxman C-06a specifications
Title Value
Inputs : CD xlr (150mV / 80kOhm)
CD rca (150mV / 50kOhm)
phono line (150mV / 40kOhm)
line 1 (150mV / 40kOhm)
line 2 (150mV / 40kOhm)
line 3 (150mV / 40kOhm)
line 4 (150mV / 40kOhm)
tape 1 (150mV / 40kOhm)
tape 2 (150mV / 40kOhm)
Outputs : XLR (positive phase)
RCA 1 (positive phase)
RCA 1 (negative phase)
RCA 2 (positive phase)
Output level : 2V / 16 Ohm (20V max ; XLR)
1V / 8 Ohm (10V max ; RCA)
THD : 0,008% or less at rated output
Frequency response : 5Hz...100Khz (± 0,5dB)
S/N ratio : 110dB (IHF-A)
PC : 40W
Dimensions : 44,4 x 12 x 41,4cm
Weight : 11kg.
List price : 380,000¥
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page online since : february 2012
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