10/22/2026
Wonderful sounding Pioneer SX-737! Conservatively rated at 35w RMS per channel, this has plenty of power for most modest livingroom setups. It would directly compete with a Marantz 2230. The 636/737 have always been my favorite pioneer receivers. They have the looks, sound, and under-rated power. This one has had the following restoration performed:
-Electorlytic capacitors replaced using Nichicon PW, KL, PJ, as well as WIMA Film caps in the signal path where possible.
-Power supply board rebuilt, flaky 2sd313 pass transistors replaced with ksd880s and 2sc945's replaced with ksc2383's (better heat dissipation. )
-Phono board rebuilt with gain matched hand selected low noise KSC1845's and wima films.
-Tone amp rebuilt with WIMA wilms, Nichicon pw's, and gain matched KSA992'S and 1845's.
-Amplifier board rebuilt with hand selected within 2% KSA992s for the input pairs, and the failure prone 2sc1351's replaced with KSC2503's.
-both bias and offset adjustment potentiometers replaced with Bourns multi-turn pots for precision adjustme ts.
-Bias set to 20mv/channel and exactly 0.00vdc offset.
-Main filter capacitors upgdaded from 50v 6800uf per rail to high quality low esr high ripple rated Kemet 10,000uf 63v types.
-FM tuner board recapped and FM tuner aligned.
-boards flux cleaned after each one was rebuilt.
-Cool blue LEDs installed in dial and meters
-All pots and switches cleaned with deoxit.
-Face, cabinet, and rear panel cleaned and detailed
Cosmetically this is a solid 8.5-9 out of 10, with a flaw on the lower left of the face plate as shown in the last photo.
This receiver sounds wonderful, punchy, warm, clean, and has enough power to drive me out of the room when paired with my Altec VOTTs.
Comes with a 1 year warranty for $649
Pick up in Brownsburg Indiana for now.
Receiver is located in booth #1061 at Gilley's Antique & Decorator Mall at 5789 US-40, Plainfield, IN 46168. They are open 7 days a week 10am-5pm and acdept most major forms of payment.