SCOTT 200-B Integrated 6GW8 ECL86 Tube Amp - restored. This is a special amp from Scott and is one of their better sounding units. Mainly, this is because of the greater simplicity of the circuit.
Interestingly, the ECL86 output tubes combine the driver tube and output tube in one envelope, thus eliminating two tubes from the circuit. Also, it is low-powered (12 watts per channel) and is best suited for more efficient speakers, where its excellent sound quality will be maximized. My own systems follow this paradigm: low-powered tube amps with very efficient speakers.I think it provides better sound, in general, than the opposite approach. The output tubes are strong testing, matched pairs (matched with my professionally-calibrated Hickok 539B tube tester). One pair is Mullard and the other pair is Telefunken. The rectifier is an RCA 5AR4. The front end tubes are brand new JJ Electronic ECC83S.
I replaced all eighteen coupling caps in the amp, including in the phono stage. I use Xicon MPP (metalized polypropylene) coupling caps, as I find that they preserve the vintage tone that everyone loves, plus they are much cleaner sounding than the stock ones. I like them better than Illinois or Sprague Orange Drops that are so ubiquitous. Moreover, the stock caps often leak and cause problems.
In fact, this unit had an output tube's plates cherrying due to a leaky coupling cap. I also cleaned all pots, switches, and tube sockets with Caig DeOxit D5 cleaner and cleaned the Tuner (Aux) and Phono input jacks. There is no hum, so the power supply filter capacitors are good. Circuit voltages read good, too. After replacing the electrolytic capacitor in the bias circuit, I set the bias for the right and left channels independently at 0.35V, per the schematic.
The amp is in really nice shape, cosmetically. The faceplate has no scratches and there is one hairline/fingernail scratch on the beveled top edge. Transformers have no rust and the chassis is not pitted. The amp has been playing and working fine over the past few weeks and has been tested on both CD and phono input.No cabinet is supplied for the amp. The chassis measures 15 inches wide X 13 inches deep. Amp weighs 13 pounds before packing. The item "SCOTT 200-B Integrated 6GW8 ECL86 Tube Amp restored and fully tested" is in sale since Friday, August 27, 2021. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps".
The seller is "mesh50" and is located in Hamden, Connecticut. This item can be shipped to United States, Canada.