Pilot model SA-300 EL34 push pull amplifier. This was restored with new electrolytic caps, orange drop caps, resistors, diodes, new line cord, new EL34 sockets. Please check all pictures for condition and underside on the chassis. Tubes tested my calibrated Dan Nelsen TV-7/U, see picture for reading. This is a heavy unit.
As always, these amps are wonderful but too bad I’m limited in space so I can’t keep all the gear I find! See photos for physical condition of the outside and inside of the amp. FYI, the mono switch is noisy if engaged, and the power switch can cause a small pop if not flipped quickly. They both will eventually need to be replaced but I don’t have the time. Restoration included: HIGH quality F&T electrolytic caps; new coupling caps for the driver board; replaced the selenium rectifier with a diode, and added diodes prior to the rectifier tube for added power supply stability. Swapped out the 7199s with a pair of 6UA8s from Tube Depot back in June. Probably have 10 hours on them. Tubes are not guaranteed as I don’t have a tube tester. Tubes included are 4 mixed EL-34s, and 2 6UA8s, Tung Sol GZ34. Here’s video of the actual unit in my system. Photos demonstrate the physical condition. I’m in Palm Springs, CA 92262.
This amp has been gone through, and all issues (and known issues) addressed. Internal capacitors have all been replaced, pots cleaned, and brought back to factory specs. Please refer to pictures for the condition. It is not perfect, but a very nice clean unit. The flash in a couple of pictures made the face look different. This is diode rectified now, so there is no need for the ez81 tubes anymore. You can put some in, but they will just glow. The sound is simply incredible. When you first turn it on, it sounds like a very good tube amp. Something my old audio research D125 could never do. After this amp warms up for about 15 minutes, it really opens up. I put about 8 hrs on it yesterday. I was so enthralled by the sound that I kept throwing cd after cd at it. I was halfway through Nora Jones at 2am. When the wife came downstairs and said, TURN IT OFF. She really knows how to knock me off my cloud. I know this is not a brute on power, but I ran it to my polk RTA-12B speakers. These are power-hungry speakers, and the eico brought them to the edge of my spl max. This is well over my wifes level, but I did wake her up. With the volume at max, there is no hiss or hum or any distortion while playing. The sound this set amp delivers is amazing. The soundstage is wide with a depth that you want from a good tube amp. HF is absolutely crystal clear with lush mids. The bass is extremely impressive for the wpc. This amp provided a nice punch with a powerful low end from the polks. Vocals, brass, guitar, and piano are all there. It sounds like you are in the recording studio. Miles Davis, Coltrane, B. This is a very special amplifier, not nearly the power of my Mac 275, but it does so many things right. Some amps you turn on to listen while you work or get stuff done. This one makes you stop dead in your tracks, sit down, and close your eyes. I wish I still had my old klipsch chorus ii speakers. I rolled some different tubes in this amp, so some pictured are different now. This will be packed very well and insured, so it will arrive safe.
For sale is a fully restored Fisher SA-100 tube amplifier in far better working condition (yes, it sounds and measures better) than when it left the factory in the early 1960s. I did this work myself and this is one of the dozens of pieces of audio gear and test equipment I have restored in the last five years. I did not do this level of a restoration with the intent to resell the unit, but I simply have too much gear and this amp sounds too good not to be enjoyed. Restoration was the following (please also see relevant photo). Nearly all resistors and capacitors replaced including wirewounds where appropriate for heat dissipation. The bulk of the resistors were 1% tolerance of better military grade Vishay metal film resistors. These are on another planet compared to the noisy and out of spec carbon comp resistors. The “sound” of the amplifier is largely dependent on the output transformers and the carbon comps were simply holding this amplifier back and of course a limitation to the reliability of this already hot running small stereo amplifier. The tight, low-reaching bass this amplifier is known for is very much present and enhanced. Potentiometers and switches disassmbled and thoroughly cleaned. Chassis gently cleaned and protected with synthetic wax. Original 7189 tubes were weak and were replaced with a quad matched set of new production Tung-sol 7189s. Russian made before the war. Put some NOS tubes in here if you’d like. The 7247s are still the originals. Tube sockets were cleaned and tightened. The work done on this amplifier is cleaner than that one. I’ll note the cosmetic flaws but if you care about these when you consider the level of restoration undertaken here, you’re missing the point. Power transformer has a slight tilt to it. There was a small nick on one of the edges that I gently filed down as it was very sharp. You can see it in the photos. Some small nicks and scratches, but this amp is far cleaner than average. Rubber feet a bit deteriorated, but still serve their purpose. Additional things you should know. This amp runs hot and it was even hotter before restoration. The temperature is not harmful to the components but it is likely going to be warmer than you’re used to. Terms (Please read these). I sell mostly vintage electronics. As such, these items are old and typically out of spec from when they were new. I do my best to test these items and make sure they work before they’re sent out, but I do not guarantee or represent that they will meet the original specifications. I may not even be able to test them, in which case assume that they don’t work. However, there are times where I may miss something. If that happens, I hope that you would agree that the most efficient way to take care of an issue is if you simply message me before opening a case or doing anything else. I need an outlet for these items online, so I have no reason to send you something that doesn’t work unless I’ve noted that it doesn’t. I pack items correctly. I know what it takes to get an item to you safely. You will NOT have to ask for it. I will do my best to get items out within a few days, however there are instances where that is not possible especially around holidays. The policies here are difficult in this regard because these vintage items in particular need to be moved and packed carefully. I do not want to damage anything by rushing. With this all being said, if there is any reason that you don’t feel that you can leave FIVE stars in every category, please reach out to me before leaving any feedback other than positive with all five stars in every category. Please message me to work this o.
International buyers, please wait for invoice before paying. Here is a full rebuilt and recapped Bogan CHA20. Look how clean it is!! Included are OEM Bogan tubes that all test GREAT!! This amplifier is very very quite and sounds amazing! These can be used for HIFI or guitar hot rod’rs turn these amplifiers into some knock out vintage guitar amps. This amplifier is ready to go. Simply plug in when you receive the amp and enjoy! We use all brand new boxes and packing material from Uline.
The cathode bypass electrolytics were replaced in the preamp section as well as one of the power amp sections. The cathode bypass resistors were replaced with 200 ohm 10 watt parts to increase the cathode bias to 95% and it sound much better like that.
This unit has undergone an extensive electronic restoration here at Novalux Stereophonic. The unit has also received a fresh set of tubes. There is a McIntosh clinic sticker on the front of the unit which has been left in place for historical context.
For sale is one of the best, most musical vintage Audio Research amps. All electrolytic capacitors, all Zener diodes, all 715p orange drops coupling caps replaced (with 716p). GE 6cg7, Amperex 12AX7, German (GDR) 12AX7, Vintage, strong SED 6550 set. Adjusted to factory specs and sounds hot in every meaning of this word. Excellent condition and comes with original manual. I will pack it well and send world wide.
