I agree with RON that the 700-T is probably the best S.S. Receiver that FISHER Ever made (before Emerson/Sanyo). Mine is cobbled together from 2 units and was in fair/poor condition between the two units when I got them before I shuffled them together. Uprated driver transistors (TO-126's) which did away with the large top plate heatsink, added additional heatsink's to transistors that weren't replaced. All new Lytic caps thru out (replaced all lytics <4.7uf with C.D. DME or Panasonic ECQ film caps) , and a few resistors brought it out of it's shell. One of the 50197-25 PEC's(tone control board) was bad and I had a good spare on the parts carcass.
The only downside is the Gold Foil on the faceplate wore off so you can't read the upper switch selections. Granted it's just the speaker switch, but it's good to know whether it's set to OFF, Main, Remote, or Main&Remote. Tuner linearity is spot on and doesn't seem to need an alignment but should have one. The MPX board was dead, and a replacement board was swapped in. According to the SG-165 the separation is 30db-35db. Good enough for me. Like Ron said it's got the Ba....Cojones for a good amount of bass even without the loudness on. And it's got a BIG pair when it comes to wattage. My info says 120W total IHF (50Wperchannel RMS @1kHz 0.8% THD, into ????ohms presume 8ohms) It certainly sounds like more. Silicon transistors, fairly large heatsinks. And it stay cool at high volumes. Not many mid to hi wattage receivers can do that when run hard.
The only thing it lacks is an AM band, but I have a 550-T for that.
My 550-T comes damned close to the 700-T in MONO, but the tuner is really needing an alignment BAD! Previous owner "tweaked" all the coils on the FM RF/IF board (which I managed to get it to pull in stations, however the MPX is too far out for me to adjust (I don't have the knowledge, and some of the gear needed). However, that being said, in MONO on FM it does pull in stations very well, good linearity, selectivity is good, and sensitivity needs some tweaking. AM is Very good. Aux, and phono are very quiet with no input and volume all the way up.
I picked up a 500-T from Rufleruf last week, but haven't put it on the DBT/VARIAC just yet. All 3 are the same size height and width so they all use the same wood cabinet. The 500-T is FM only. Note that FISHER Rates both the 500-T and 550-T @ 90W IHF (Total Peak) but RMS for the 550-T is 35/35 and the 500T is 32/32. Compare the 550-T and 500T with the 500-C. Fairly equal across the board with some minor differences. But using a 800c to compare the 550T is a bit brighter in the high's using the same speakers compared to the 800c. 550-T has better damping of the bass compared to the 800c. The mids are a bit subdued compared to the 800c. Overall they compare favorably. The 550-T and the 700-T sound very good and have an early Solid state sound compared to a later PIONEER SX-737 which is comparable in RMS wattage, and is direct coupled to the speakers from the output's. The SX-737 is overall brighter than the 550-T/700T. The 550-T/700-T sound quite like later cap coupled units to me.
Compared to the 500-TX the 700-T has slightly less wattage, and a hell of a lot less bells and whistles. But the 500-TX sounds very much like the PIONEER SX-737 in overall sound but the HOUSE sound is still there, but not as apparent.
If you want a Bare bones Mid late FISHER Solid State FM ONLY Receiver, the 700-T is the one to get. I would equate it to the 200B tube tuner. But if you can't find one the 500-T is a good substitute (same series and a lot of the same boards/ topology) which I would equate with the 100b tube tuner. The 220-T (next to the BOTL 200-T would equate to the KM-60 or 61.
The 500-TX/800-T is a series newer (1969 to '71) and replaced the 700-T. It's a worthy replacement but it just isn't the same. It's got more bells and whistles, 3 different ways to tune the FM, AM is decent, a bit more power, but due to all of this the amplifier is more complicated, and this could be why it just doesn't sound as good or tube like.
1968 S.S. and Tube Tuner Roster with spec's.
