Vintage Stereo Receivers ~ Tuners ~ Amps

Kenwood KR-4070

Kenwood KR-4070 ('78-'79) 40W x 2 $185

Looking it like it just came out of the box​, this very cool KR-4070 with upgraded warm blue LED lamps for the FM glass and meters, has a strong tuner section and excellent phono stage. The overall sound is sweet and transparent with many numerous great reviews on the web.  Built to compete with comparable mid-sized Pioneer, Sansui, Yamaha, etc and, according to sales figures, outsold them all.
It  features a wide band power with the same low distortion amplifier and high performance FM tuner you expect from Kenwood. 
Capable of driving two pairs of speakers, it also has the usual aux, phono, and setup for tape. Features: 40 watts per channel, (min. RMS both channels driven at 8 ohms, 20 - 20,000 Hz, with no more than 0,05% THD), 
Direct-coupled pure complementary amplifier circuit, quietest phono section in its class: 83 dB S/N, 3-gang tuning capacitor and FET front end for high FM sensitivity (2.0 µV ) with low distortion, PLL in FM Multiplex for improved stereo separation, Large signal strength and FM center-tune meter and FM Auto Muting. 
In other words, a lot of great stuff in a beautiful vintage receiver.

About Kenwood (Trio)...

Established in 1946 as the Kasuga Radio Co. Ltd. in Komagane City, Japan, in 1960 the company was renamed Trio Corporation. In 1963 the first overseas office was founded in Los Angeles.

In the early 1960s, Trio's products were rebranded by the Lafayette Radio Co with a focus on CB radio.

An importer of Japanese-made electronics Radio Shack (Realistic, Tandy Corp) was A&A Trading Co., and a bilingual Japanese-speaking manager from there established a company that would be the exclusive importer of Trio products.

The name Kenwood was invented by Kasuga as being the combination of "Ken", a name common to Japan and North America that had been tested and proven acceptable to American consumers in the name of Kenmore appliance (Sears) \, and "Wood", referring to the durable substance as well as suggesting a relation to Hollywood.  The brand recognition of Kenwood eventually surpassed that of Trio's, and in 1986 Trio bought Kenwood and renamed itself Kenwood.  Eventually, Kenwood merged with JVC in 2008 as JVC/Kenwood.


Hafler P500

Hafler P-500 amplifier ('80-'89) 255W x 2 @ 8 ohms  

This Hafler P500 is in good working condition and best described as a high power, two-channel audio amplifier intended for professional or home use.  It's level of performance and reliability have been amply demonstrated in the success of it's counterpart in the consumer market, the DH500, for many years.   It's a lot of fun having this much power at your disposal - seemingly unlimited headroom.  It's nominal power output is rated at 255 watts per channel into 8Ω (stereo) and 800W into 8Ω(mono) Its incredible frequency response is 8Hz to 85kHz with a total harmonic distortion of 0.025%.  Heavy at 53 lbs and solid as a tank, this Hafler is a real beast.

Hafler DH-200

Hafler DH-200 (1979) 100W x 2 $200

This one has the original Hitachi output MOSFETs and all new fuses.
Plug it in and forget about it .. match it to the highest possible quality pre-amp you can afford because it has dynamics and detail in spades.
It will drive below 4 ohms (e.g. Gale 401s and KEF 104/2 etc.) with ease. Gordon King in HiFi News and Record Review saiditwas the finest amp he had heardAnd, unlike a lot of other amps, do not worry about the impedance of your loudspeakers this baby works down to 2 ohms with panache.
Now, if you were to take the insides and put it in a nice fancy solid aluminum case perhaps it would have been taken more seriously by the unknowing masses.  In its time (and even today) all in all, it's a wonderful amplifier unequaled in its price range and well above.

About Hafler...

Right from the very early years of high fidelity, David Hafler introduced the world to high performance audio with his range of Dynaco preamps, tuners and amplifiers. Today, Hafler continues the tradition by producing the very finest audio components that enthuse and enthrall those that have a particular bend towards spectacular audio.

All Hafler products are designed and hand made in North America, using the finest components while every possible effort is made to reduce odd-order harmonic distortion, minimize phase shift and broaden the frequency response to ensure the signal transfer from source to destination is pristine and color free.


Sansui G-5700

Sansui G-5700 ('79-'80) 75W x 2 $325

Pure Power! That was the tag line for Sansui's G-Series receivers from the late 70's and they lived up to the advertising hype.
This mid-high range Sansui G-5700 at a conservative 75 watts per channel is one great performer.   
A "hybrid" receiver of sorts with its analog and digital tuners, digital power meters, luxurious faceplate design and its real rosewood veneer case make this a desirable beauty.
In fact, many audio enthusiasts make the claim that the Sansui G series receivers are some of the best receivers ever made in terms of both build quality and performance. The audio industry was evolving at the time and technology was advancing to a point where audio equipment could do a far better job of amplifying sound in a manner that kept it as close to the original recorded sound as possible. Sansui's DC circuitry did just that.The G-5700 was produced from 1979 to 1980 and really is a great representative of the vintage audio years. 

Founded in Tokyo in 1947, Sansui initially manufactured electronic parts.  By the 1960s, they had developed a reputation for making serious audio components. They were sold in foreign markets through that and the next decade. Sansui's amplifiers and tuners from the 1960s and 1970s continue to remain in high demand by audio enthusiasts.


Marantz 2252B

Marantz 2252B ('77-'79) 52W x 2 $425

A direct quote from a highly respected audio publication:
"The Marantz 2252B is one of the best performers out of all the Marantz models.  It's well known for its warm sound and exceptional build quality. Add to that 52 watts per channel and you've got yourself a good receiver."

Here we have some "old-school" high-fidelity from California-based Marantz  when they were still designing sane components producing sane WATTS : when 2 channel stereo at 52 watts per channel felt like 152 watts per channel.
Direct current symmetrical SEPP output with one big transformer, two big caps, four pairs of Marantz-tagged bipolar transistors (A753 / C1343) mounted on big heatsinks - the word is BIG! Gyro-geared PLL MPX dual-gate MOS-Fet 4-gang tuner section (3 for FM) with 200Khz ceramic filters and Baxandall triple L/R tone controls.  Considering this was 1977, it was feature-packed indeed.  And solid.  And, don't can connect two turntables. two pairs of speakers, two tape loops and an auxiliary as well.

This 2252B has the original black metal case (for an additional cost and to be found elsewhere, it can be fitted with an original Marantz WC-22 wooden case).  This 2252B is operating perfectly.  It has seven 8v 300 ma fuse lamps across the FM window and twin meters.  The fuse lamps are incandescent and have soft a glow that makes the beautiful, industrial designed, silver faceplate on the Marantz quite beautiful to look under low room light.  (We can upgrade with LEDs for a minimal charge.)

About Marantz in late 70's..
Parent company Superscope had purchased the Marantz company in 1964.  Now, of course, Marantz, in the 60's ,was a small but very prestigious hi-fi company founded by Saul Marantz, a genius in his own right.  To their credit, Superscope did an excellent job of keeping the Marantz name in rock solid position as one of the premier names in high fidelity.  However, by the mid to late -70's, they (Superscope)  were  in serious financial trouble but ,nevetheless, they still had the Marantz products to keep producing fine, well-built, highly respected and profitable gear.  Unfortunately, even though Superscope was producing budget products under their own badge, the confusion of seeing "Made by Marantz" on some of that budget gear confused a lot of people and, eventually, even though the genuine Marantz products were indeed much better, people began to think they were all the same.  But they weren't.  As the often quoted phrase goes: "Superscope was the poor man's Marantz"


Onkyo TX-4500MKii

Onkyo TX 4500 MKII (1980) 65W x 2  $285

This super clean TX-4500MKii was, at the time, the first stereo receiver with quartz-synchronization for the FM band.  Even though its predecessor, the original version TX-4500 was a successful Onkyo upper middle class receiver, Onkyo decided to redesign the 4500 so the MKii version was optimized.  Upgraded components packed into the same chassis resulted in an additional 10 watts more than the first version and was rated at a conservative (and honest)65 watts per channel.  
And, for the display scale, they used real thick glass. With its already desirable industrial design, this was an added expression of timeless elegance. It's a heavy receiver with solid high power, enough to drive 3 pairs of speakers.  The trademark look of this series, the rosewood veneer on metal along with the four hex bolts holding the front glass, gives it a "top shelf" appeal.
Onkyo was so pleased with the overall success of the TX-4500MKii that, out of the hundreds of products they designed all that time,  it was the featured receiver on the print sheets for their 70th Anniversary.

About Onkyo...
The word Onkyo translates as "sound harmony".  Starting out in 1946, Osaka Denki ONKYO K.K. is established and begins manufacturing phonograph pickups. The CP-1000 turntable was the first product to bear the ONKYO brand.  They also manufactured integrated stereo systems throughout the years but they majored in turntables, early amps, preamps, stereo receivers and also the cassette tape format beginning in 1981 with the TA-W800, the world's first high-speed dubbing, double-cassette tape deck with a wide variety of tape-editing functions.
They hit their high mark in the late 70's with the TX-xxxx series of stereo receivers, tuners and amps.  Onkyo kept pace with, and in some ways exceeded, the strong competition from Pioneer, Sansui, Marantz, Optonica, etc.  The stereo wars of the 70's yielded so many great products and Onkyo is right there with the best of them.
Today, Onkyo is still a global brand and their Integra series is well respected.


Yamaha CR-420

Yamaha CR-420 ('78-'80) 22W x 2 $175 

Let's start off by saying this baby has some punch for a "so-called" lower powered receiver.  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 in great shape and the brushed aluminum faceplate is clean.

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.


Concept 3.5

Concept 3.5 ('75-'78) 35W x 2  $200

We love to find excellent, hard to find vintage gear...especially when they are as nice as this 3.5 which is in near mint condition. Very conservatively rated at 35 watts per channel, this rare Concept 3.5 is a heavy duty, well designed, stereo receiver known for it great bass control, sound stage presentation and a very accurate tuner, The direct-coupled power amplifier section uses high gain voltage amplification with rugged output transistors for a stabilized, high speed configuration. A large toroidal power transformer supplies enough power for the most demanding musical peaks.  Unlike most comparable receivers in this class, the 3.5 was designed with internals that were ahead of their time...just like all the Concept receivers, regardless of size and power.  As with all the Concept receivers, this too has one of their trademark design elements...a nice rosewood veneer case.

About Concept...
Recognized universally as some of the very best stereo receivers ever made, the Concept receivers circuitry was designed in-house, by Dick Schramm, at Pacific Stereo (late 70's California). Tom Ishimoto, former product development manager of Marantz, also had a hand in building some of the Concept line at NEC of Japan. The bulk of the manufacturing was done by TCE, an electronics manufacturing division of Tandy Corp. (Tandy was the parent company of U.S. electronics retail chain Radio Shack). A lot of effort was made in upgrading the Concept design capabilities, and TCE's production techniques at the time were described as "terrific". Several other manufacturers were considered for the Concept receivers, but, as far as Schram was concerned, TCE was by far the best. They had gifted engineers who were excited to work on some REAL hi-fidelity audio products and became very loyal to him during the entire process. The Concept credo was "better quality parts, operated with more margin of safety, superior circuits and no shortcuts" - that's why they last so long and still sound as good today.

More about Pacific Stereo (and Concept...)

The Concept line of stereo receivers were offered by Pacific Stereo as their top tier house brands. (in order, top to bottom: Concept, Reference by Quadraflex, Quadraflex and TransAudio) The top of the line was the Concept 16.5 (165 watts per channel, considered by many to be the best stereo receiver ever made!).  Basically, when a customer went into a Pacific Stereo store looking for Pioneer, Sansui, Kenwood, etc, the salesman would steer them toward one of the "house" brands, the best of which were the Concepts.  Normally you might think that the house brand would be some cheaply made unit designed for maximum profit to the retailer. But, in this case, the Concepts (and secondarily, the Reference series) were very well built and high performing receivers.  Especially the Reference 650FETR which was Richard Schram's baby all the way, a very fine stereo receiver that deserves to be in any serious audiophile's collection.


Rotel RX-603 (different lighting in the photos makes the wood a bit lighter or darker)

Rotel RX-603 (1977) 45W x 2  $200

Hard to find and in near mint condition with a beautiful, retro-fit, custom, teak finish case for that classy vintage look of warmth.
This solid Rotel RX-603 is a massive block of well-designed aluminum, packed with superior components that​ rarely need servicing.  One of the best features is its ability to be used a really nice preamp by removing the jumpers on the back. The distinctive front faceplate has the signature Rotel FM window shape that sets them apart from all other receivers of the 70's.  The RX-603 was conservatively rated at a minimum 45 watts per channel but online meter tests have shown they yield closer to 52 watts per channel. Real aluminum knobs, large rectangular push buttons, factory rack handles and a pleasing soft yellow dial light are just a few more features of this very excellent vintage piece.

About Rotel... Rotel is a family-owned Japanese manufacturer of high end audio and video equipment. The company was established in 1961. In the early 1980s Rotel joined the B&W Group forming a strategic alliance with Bowers and Wilkins and later adding Classé Audio.


Sony ST-S550ES tuner

Sony ST-S550ES tuner (1991) $125

As a component of one of their their very nice quality ES systems, ​Sony succeeded in building ​this excellent​ digital tuner with analog characteristics.​  ​This piece is extreme​ly attractive with real ​rosewood veneer ​wood​en​ side panels​. ​ ​Used with a conventional analog system as a separate unit, it provides​ a warm,​ ​yet detailed sound​.  

Included, for a matching Sony ST-850ES cassette deck in VGC that does need belts.  We will leave that repair up to the buyer.​