Vintage Dynaco ST-70 Stereo Tube Amp, Restored, Nice Cosmetics 1960s, USA, Ex Sound/Performance, Well Cared For 1960s - Chrome/Brown

Vintage Dynaco ST-70 Stereo Tube Power Amp, 1960s, USA, incomparable vintage Dynaco transformers, quality, craftsmanship, attention to detail, fit, finish, sound quality and performance. This is the early most desirable version with coth wires on the transformers. All key components including the power supply capacitors have been replaced and updated. It comes with vintage 1960s RCA Black Plate 7199 preamp/driver tubes, Russian EL 34 power tubes and Russian 5AR4 Rectifier tube. The amp is in very nice cosmetic and well cared for condition, always stored inside a climate controlled non smoking environment. It has nice letter, nice chrome/nickel plating. It sounds superb, open, detailed, dynamic, involving, spacious, transparent, smooth, natural and very musical. It is quiet. It is rated at 35 WPC and will best be suited with appropriate speakers. It was quality made and designed 1960s in the USA when Dynaco was at the top of their game. These vintage ST-70s are known for the superb performance. It is ready to plug and play. It also has 4,8,16 ohm speaker outputs. The shipping cost includes safe packing, insurance, prompt shipping and tracking number. Buy with confidence, see my feedback. Good Listening, SonnY :) See the specs and description below:

Description

The Dynakit Stereo 70 is a complete dual 35 watt power amplifier kit which offers the highest possible fidelity, at low cost and in a compact arrangement.

It uses a patented circuit of outstanding performance characteristics, along with top quality parts, including the new Dynaco Super-Fidelity A-470 transformers - the finest available.

The measured specifications show that the Stereo 70 is an amplifier of unequalled performance, and its listening quality is also unrivalled by any regardless of price.

This amplifier has characteristics and power rating ideal for either stereophonic or monophonic use. The two non-interacting 35 watt channels provide adequate power, in a stereophonic or two channel system, for loudspeakers of any level of efficiency.

The channels can be paralleled for a full 70 watts of low distortion output, suitable for practically any monophonic use even where several loudspeakers are in use in different areas.

The high power capability and low internal impedance provide excellent damping for all types of high quality speaker systems without need to make adjustments to match specific speaker installations.

The design features of your Dynakit which contribute to its superior listening quality include some which are not revealed by the customary steady-state laboratory measurements.

For example, it does not exhibit bounce and flutter when pulsed with a transient signal. Thus a sharp percussive signal like a drum beat or a piano note will be reproduced with sharpness and clarity and neither overhang nor muddiness.

The Stereo 70, unlike many other amplifier circuits, has been designed to provide its specified performance on a loudspeaker load, not just under laboratory measuring conditions. Therefore, the connection of a loudspeaker to the amplifier does not deteriorate its performance or listening quality.

In addition, due to the high quality of the output transformers used, the Dynakit's power handling capabilities are maintained over the entire audio band without the sharp rise in distortion which characterizes most amplifiers at the extremes of high and low frequencies.

Specifications

• series 3
• series I
• series II

• Power output: 35 watts per channel into 8Ω (stereo)Frequency response: 10Hz to 40kHzTotal harmonic distortion: 1%Damping factor: 15Input sensitivity: 1.3VSignal to noise ratio: 90dBSpeaker load impedance: 4Ω to 16ΩValve complement: 4 x EL34, 2 x 7199, 1 x GZ34Dimensions: 13 x 9.5 x 6.5 inchesWeight: 32lbsFinish: nickel plated chassis, charcoal brown vinyl paint cover