This module is listed for individual sale. A good upgrade is to buy two.

This ready to use module replaces the SS-120A in the Sony STR-6800SD or the S-100 in the Optonica SM-4646, even the S-80 used in the LR-5555A, SM-3636, Nikko NR-815, and AS-1080DB.

Carefully designed to fit the same mounting holes, no drilling or grinding necessary.
Very fast and easy install in the Sony.
Built with modern output transistors and discrete, repairable design.

Higher current:        15 amp vs 10
Higher voltage:        160 volt Vce vs 120
Higher dissipation:    160 watt vs 100
Higher current gain:   8,000-20,000 vs original 2500.
Higher heat transfer:  Theta 1.5 vs 1.8

These same power transistors are used in the 140 watt per channel Marantz SR8012 and the Yamaha RX-A2070.

NO bias adjustment, presetduring testing.
NO paste needed, we supply silpads.
NOT 40 years old or counterfeit.
YES, every module assembled and tested with an original STR-6800SD receiver.
YES, gold-plated PCB. PCB Finish, ENIG (Gold), compliant with IPC-4552.
YES, free USPS shipping in the USA.


Typical performance:
0.0079%    1.0w      400 Hz
0.0034%    10W       400Hz
0.0048%    90w       400Hz
Noise      -74 dBV   22-22k BW Audio Precision P1+DD test set
A-wtd      -79 dBV
S/N        106dB

Hand tools and simple solder skills required.
Technical knowledge required.
No returns and limited support, this is not for beginners.
We do supply instructions and helpful test tips.

Other Products on Offer:
S-100+..........Sony SS-120A, Optonica S-100
SP-40W+.........SX-650, SA-7300, SA-6700, Rotel RA-414, Technics SA-425
STK0050+........SX-780, SR4000, KR-5010, RS-2004A, JA-S44, JCX-2050
STK0059+........Technics SA-300, SU-8044, Sanyo DCX-811, Pioneer SX-680, SX-690
STK0080+........Fisher RS-2010, CA-880, CA-800, Marantz SR6000
STK1060+........Sanyo STK1030, STK1040, STK1050, STK1060

STK1080+........Sanyo STK1070/80, Akai AA-R42

STV-X+..........Sanken STV-2H, STV-3H, STV-4H

TA-100W+........Kenwood KA-8300/7500/9800
TA-100WA+.......Kenwood KA-9100/9150
TA-200W+........Kenwood KR-9600
ODR OUTER+......Converts Pioneer ODR Head units proprietary socket to Toslink
VS-1............Video/SPDIF/Audio Sensor for Home Automation

NOTE: The TA100W and TA-100WA are very similar, but do not run at the right temperature if swapped.