Vintage Stereo Receivers ~ Tuners ~ Amps

Pioneer SA-8100
Pioneer SA-8100

Pioneer SA-8100 integrated amp 

(1974)  40 WPC  $350

In near mint cosmetic condition and fully operational, this SA-8100 was hailed in 1974 as Pioneer's "big power" integrated stereo amplifier.

It features a unique twin tone control system for versatile tonal adjustment, high and low subsonic filters and high stability, reliable pure complementary OCL power amplifier design, with differential amplifier at the first stage. 

Large electrolytic capacitors were expected to ensure stable operation for many years.

Its many features include outputs for two turntables, two auxiliary, two tape decks and two pairs of speakers.  

They built this baby to handle it all with typical elegance from the industry leader...Pioneer.

Rated at a very conservative power output of 40 watts per channel into 8 ohms (in stereo) with a measured frequency response from 10Hz to 70kHz and a total harmonic distortion of less than 0.05%  

The noted speaker load impedance is from 4 ohms to 16 ohms

Pioneer SA-610 integrated amp with Pioneer RG-2 audio processor and SR-303 reverb amp
Pioneer SA-610 integrated amp with Pioneer RG-2 audio processor and SR-303 reverb amp

Pioneer SA-610 integrated amp 

('79-'81) 45 WPC  SOLD

includes Pioneer RG-2 audio processor and Pioneer SR-303 reverberation amp

The SA-610 was part of Pioneer's popular 'x' series in the very early 80's.  

This low profile amp has the silver faceplate, metal controls and lovely blue fluorescent display without looking bulky. The interior build is tidy with well routed cables making repairs relatively easy. 
Obviously, with Pioneer's extensive history of excellent sound quality, the SA-610 is also very good even with the tone controls switched off, the sound is detailed and smooth without being forward or bright. 

Rated at 45 WPC into 8Ω (stereo) with a frequency response @ 10Hz to 60kHz and THD: 0.03%

Included with the SA-610:

Pioneer RG-2 audio processor w/ 5-stage dynamic expansion selector ('79-'82)

The matching design of the RG-2 is a complement to the SA-610 and allows fine tailoring of the sound output.  

Modern recording uses three dynamic control techniques which may detract from the original dynamic range; reduction of transient peaks, overall compression of loud levels and upward manipulation of soft levels.

The RG-2 was designed to correct dynamic distortion in each of these areas, increasing the contrast and virtually restoring the original live program.

Pioneer SR-303 reverberation amplifier ('79-'82)

Reverb amp with high S/N and low distortion, depth controls, two types of reverberation, very cool visual fluroscan window for effects, 

About Pioneer...

Not much needs to be said about Pioneer other then the simple fact that the name is known worldwide for above average quality and excellence in high fidelity component design.  They were the unchallenged leader in stereo advertising and marketing in the 70's.  Back in the day, Pioneer made it clear that if you didn't have a Pioneer stereo system in your house (or college dorm) you just didn't have the right stuff.



Optonica SA-5206
Optonica SA-5206

Optonica SA-5206

 (1980) 45 WPC   $265

This fairly rare, very excellent and very good looking blackface Optonica SA-5206 is another of the fine receivers from Optonica that we've been fortunate enough to locate over the years. In pristine condition, it's a jewel of vintage history.

Since the value of Optonica is beginning to skyrocket lately, any time there's an opportunity to get one of these amazing receivers, we'd suggest you go for it because we do...for sure!  

Most of the Optonica models have reached the status level of higher end quality that are being sought after by audiophiles. The quality of the Optonica receivers are right up there with the best of Pioneer, Sansui, etc.  

The black faceplate, trademark teardrop-shaped machined black aluminum knobs with silver trim are all unique to the Optonica SA series.  

They also made the same identical units except with silver faceplates instead of black. 

The rosewood veneer case is also common to this series... it's very attractive.

About OPTONICA (Sharp Electronics of Japan)...

The Optonica brand was created and first launched by Sharp in 1976 as a separate high-end brand to compete directly with Pioneer, Technics (Panasonic), Fisher, Marantz, Nakamichi, Sansui, Kenwood and Sony. Sharp Electronics Corporation of Japan was founded in 1912 and takes its name from one of its founder’s first invention, the "Ever-Sharp" mechanical pencil. Obviously, they also designed and sold much more over the years. By the mid-70's their electronic equipment (mostly gadget oriented items sold in catalogs and department stores) was well situated in the USA. Major decisions were made to move into the select high-end stereo component market. They absolutely hit a home run with their Optonica lineup. Unique, powerful and definitely well built, they are now very well known and commanding prices approaching the better Marantz and Pioneer units.



HH Scott 355R
HH Scott 355R

HH Scott 355R

('79-'83) 45 WPC   $225

This HH Scott 355R is in excellent cosmetic and working condition. Conservatively rated at 45 watts per channel (@ 8 ohms) it's build design makes it capable of doubling it's power in 4 ohm loads up to a powerful 100 watts per channel.

Built to compete with Sansui, Pioneer and the other well known names, HH Scott's reputation was well established after the 70's. It's a common fact that Scott didn't spend a ton of money on advertising, relying instead on high quality components and word of mouth. 

The 355R was Scott's mid size entry in the analog/digital category that was taking over the market in the early 80's.  Fluoroscan blue power meters with their digital readout along with a pure analog tuning scale dominate the front silver face. The tuning section in the 355R is one of the best ever made because HH Scott had a great reputation when it came to the build quality of their tuners.

Some of the features besides the usual phono, aux, FM, etc include bass/mid/treble controls, 18 Hz subsonic filter and 7KHz high filter

Powerful with its over-sized transformer, it's heavy and, of course, very well built. As just mentioned, the three level controls for low, mid and highs are another nice touch.  

The brushed aluminum faceplate and two-tone light/dark walnut side panels round out the description of the 355R as a premium, mid-level receiver that's getting harder to find in such great condition as this one. 

HH Scott 350R
HH Scott 350R

HH Scott 350R receiver 

(1978) 40 WPC   $225

This is a very nice HH Scott 350R, it's a rare, vintage beauty and a one-owner unit in excellent cosmetic condition.  Just serviced with a partially recapped power board and new ready for a new home.

The first thing that grabs you is the gorgeous design...huge aluminum detented tuning and volume knobs, silver flip switches, aluminum block selector knobs, four black-background meters, beautiful silver face design and real walnut veneer side panels.  

All new lamps cast the right look into the four black background meters...stunning. 

Some of its features include: 

~DC configuration OCL power amp section with crazy low distortion (0.06%) 

~Four gang FM tuner section and all silicon dual-gate MOSFETs for wide, low noise signal and superior FM reception that pulls in distant stations with ease...even without an antenna!

~Four meters: dual wide range power meters calibrated in watts plus signal strength meter and center channel tuning meter

One of the most elusive of the late 70's receivers from HH Scott, the 350R is a definite high value collector quality piece of vintage history.

About H.H. Scott...

Hermon Hosmer Scott held many patents and was instrumental in the birth and development of high fidelity sound equipment.  HH Scott, the famous name by which he and his firm were so widely known, became one of the top two respected names in consumer high fidelity (and later stereo), the other also bearing its founder's name, the very famous Fisher Radio.  HH Scott was one of those highly respected companies in HiFi that spent relatively little on advertising but in the audiophile community they were well know regardless.



Yamaha CR-420
Yamaha CR-420

Yamaha CR-420 receiver

 ('78-'80) 22 WPC  $185

Let's start off by saying this baby is in mint condition!  One of those rare finds from the original owner, this CR-420 is just flat out gorgeous.  

Packed with all discrete components, it's late 70's design reflects the rapid improvement in receivers that made them lighter, more powerful and relatively easy to work on.  

Yamaha's famous "Natural Sound" is part of the attraction in this one, along with the loudness compensation feature that made the Yamaha CR Series unique.  

Features include outputs for two pairs of speakers, phono, FM, Aux (you can plug in your phone or laptop!) and much more.  

The teak styled veneer case is flawless and the brushed aluminum faceplate is literally mint!

Yamaha CR-620
Yamaha CR-620

Yamaha CR-620 receiver

(1977) 35 WPC  $245 (mint)

In like new condition and looking beautiful, this one-owner Yamaha CR-620 "Natural Sound" receiver, like all the "Natural Sound" units, was well respected back then (and now).  The CR-620 was one of Yamaha's best selling mid-range units from 1977-1979. 

Considerably larger than than most of the competition in this class size, it puts out a minimum of 35 watts per channel (8 ohms RMS).

The overall interior build enables the CR-620 to use that power cleanly and effectively with an absolute minimum of distortion. 

It has the classic Yamaha styling (with a very recognizable teak case) and was rated at an incredibly low 0.015% total harmonic distortion.  

This has been upgraded with all new green tinted 14 volt lamps on the tuning needle, signal and tuning meters.     

Unique to the CR series was Yamaha's *"Continuously-Adjustable Loudness" control.  

Simply explained, once you set your comfortable volume level (with the volume knob) you just use the loudness control thereafter.  It continuously adjusts the correct amount of bass no matter what the level of sound.  

About Yamaha...(1972 and later)

From the CA-1000 that whipped up a whirlwind and brought Yamaha recognition in the audio world, to the AX-2000A that, after groping around with digital technology, managed a comeback to pure analog.  The very successful "Natural Sound" marketing in the 70's brought Yamaha into direct competition with Pioneer, Marantz and almost all the other great companies of the era.



Glossary of receiver terminology
Glossary of receiver terminology