Vintage DYNACO STEREO 400 POWER AMPLIFIER working beautiful condition

Description

Vintage DYNACO STEREO 400 POWER AMPLIFIER working beautiful condition all original
This a monster amplifier with a clean 200 watts per channel. It is working as it should. The volumes pots haven clean. Speaker terminals are solid - banana plugs and through clamp combo original terminals. Power switch has 3 positions: off and the other two flip the A/C hot and ground power wires to eliminate a hum like the old trick of flipping the plug in the outlet. The caps are good and strong - this continues to play 6 seconds after you power it off before the protection circuit trips it. Original clean power cord. Chassis is pretty clean. This baby is 52 lbs! American made - Philadelphia, PA Hard to find on this
condition
I prefer a local pickup where you can see and hear it,
Published description is below:
Dynaco Stereo 400
Stereo Power Amplifier (1972-74)
The Dynaco Stereo 400 is a basic power amplifier employing all silicon solid state devices. They include 46 transistors, 47 diodes, 2 silicon controlled rectifiers, and 4 integrated circuits.
The series-connected output circuitry is of full complementary symmetry design. The entire main amplifier is direct coupled.
It's measured distortion levels approach the threshold of the most exacting laboratory test equipment, not only at the commonly specified full power ratings, but more importantly at very low power outputs as well.
This is the result of circuit techniques which eliminate any discernible crossover notch at low levels, and it contributes in large measure to the Stereo 400's freedom from listening fatigue.
It's lucid, utterly uncoloured neutrality reveals delicate nuances and musical shadings in the best program material - one result of achieving unconditional stability with varying loudspeaker loads.
Implicit in the design of a superb high power amplifier is the responsibility to include superior techniques of protection for both the amplifier and the speaker load, if long-term trouble free operation is to be achieved. To this end, Dynaco has included more separate protective systems and features than have ever been employed in such a product.
These include an AC line circuit breaker (rather than a fuse); four separate power supply fuses; electronic volt-amp limiting to ensure safe operation of the output transistors; independent high temperature cut-outs on each channel, which are mounted directly on the output transistors to assure maximum sensitivity; over 1000 square inches of radiating area for the mammoth heat sink; provision for accessory fan cooling with optimum efficiency; delayed turn-on to eliminate loudspeaker thumping; relay protection against DC signals at the output; load (speaker) protection fuses accessible on the front panel; input level controls to reduce sensitivity; input filters to control the bandwidth; and the exclusive Dynaguard adjustable dynamic power limiting circuit to protect the speaker load.
The Stereo 400 was engineered to accommodate a wide range of specialized needs in studio, laboratory and industrial applications, as well as in the home. It has been designed as two independent 200 watt (at 8 ohms) amplifying channels with a common power supply having a high degree of inherent regulation.
For special requirements, a technician can easily convert it to a monophonic 600 watt (at 8 ohms) output.
Accessory provisions for mounting on a standard 19 inch rack, an alternative front panel which includes two output meters, a cooling fan, and an alternative power transformer for international AC line voltages are available at additional cost.
Specifications
Power output: 200 watts per channel into 8Ω (stereo), 600 watts into 8Ω (mono)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.25%
Damping factor: 30
Input sensitivity: 1.6V
Signal to noise ratio: 95dB
Speaker load impedance: 4Ω to 16Ω
Semiconductors: 46 x transistors, 47 x diodes, 2 x silicon controlled rectifiers, 4 x IC
Dimensions: 17 x 14 x 7 inches
Weight: 52lbs
1974 Dynaco stereo 400 - Tested. Condition is "Used". great working order beautiful condition
All original, nice condition. Untouched.
This item is pre-owned and may show some slight signs of wear due to normal use. This item is in good condition overall. Tested and is 100% fully functional. Please look at the photos to make your own determination of this items condition
Working great, clean sound
great working condition,
THIS SALE IS For the AMPLIFIER Dynaco stereo 400  ONLY
Check my other listing for the preamplifier
Up for auction is a  RARE Dynaco
Stereo 400
amplifier
fully tested all the lights and controls working great and respond like should
The unit just came out of storage. The unit powers up and works and sounds excellent, nice and smooth. The unit is the original condition maybe the need some clenning. This is a vintage item and should not be compared to today's electronic products.
PLEASE, please check out  all the pictures before you consider bidding.
The item is selling AS IS and FINAL.
Please make sure you are OKAY with
SOLD AS IS and all sales FINAL. ITEM SHIPPED WILL INCLUDE ONLY WHAT IS ON THE PICTURES.
SERIOUS BUYERS ONLY PLEASE!!!!
I've had many BAD experiences with new eBay buyers with less than double digit ratings so please don't waste time for me. Sorry in advance.
FOR ANY REASON, COST OF ANY SHIPMENTS BACK WILL BE YOUR RESPONSIBILITY.
I will take Pay Pal payment only. I
require IMMEDIATE PAYMENT
upon the end of the auction. Will ship within the Contiguous U.S. ONLY.
NO P.O. BOX Shipping.
Shipping outside of U.S. will need to go through eBay Global shipping program so please make sure your address qualifies.
As soon as payment clears, I will ship the item within 3 business days but it is usually one. No reserve on this item so the highest bidder wins.
Please make sure to open the package as soon as the item arrives to ensure the condition and all contents are as described.
I strive for the best service possible. If you have any issues, please contact me first before opening a case so we can work out a pleasant resolution. Thanks and happy bidding.