Vintage Tube Amp

Vintage Dynaco ST-70 Dynakit Stereo Tube Amplifier for Repair or Part. For parts or restoration. Please check all pictures provided.

Dynakit Stereo 70 still looks very beautiful inside and out. No dents or damage. Message for any other questions. Open to offers close to the asking price. They are very reasonable and fair.

Offered in used condition and fully functioning. This Dynakit has been bench tested and is ready to be plugged and played. This is part of a fairly large audiophile estate. We will be offering many McIntosh items as well as other great vintage items. 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. 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. Power output: 35 watts per channel into 8? Frequency response: 10Hz to 40kHz. Total harmonic distortion: 1%. Input sensitivity: 1.3V. Signal to noise ratio: 90dB. Speaker load impedance: 4? Valve complement: 4 x EL34, 2 x 7199, 1 x GZ34. Dimensions: 13 x 9.5 x 6.5 inches. Salesbaron is in Los Angeles, 90039. All major credit cards. Filing a claim should be reserved as a last resort to solving an issue. Please give us a chance to solve any issues that you may have for any reason before leaving feedback.

Vintage Dynakit series 70 tube Amplifier. A very clean cage and a well-cared-for piece of equipment. The Amp works as i see all tubes light up except one and that one receives power as it gets hot. It may just need a new tube and work perfectly or may need a little service i can’t really say. The person i bought it from was the original owner and was as meticulous and clean as could be. I haven’t cleaned the units outside but i think it could be cleaned to look like new from the outside if you wish. A wonderful piece of our audio history to enjoy. As such, it does not come with any guarantee– implied or written. Most online sales of vintage electronics happen under these exact same conditions-but I just wanted to point this out so there are no misunderstandings or disappointments. Thank you and enjoy. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “plugfind” and is located in this country: US. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, South Africa, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi Arabia, United Arab Emirates, Qatar, Kuwait, Bahrain, Republic of Croatia, Malaysia, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Taiwan.

• Brand: Dynaco
• Type: Tube Amplifier
• Model: Stereo 70
• Featured Refinements: Vintage Stereo Amplifier
• Country/Region of Manufacture: United States
• Modified Item: No

Dynaco (Dynakit) Stereo 70 (ST-70). Vintage Stereo tube amplifier. Serviced: cleaned and vacuumed chassis, cleaned all controls and switches, and jacks. Tested all tube outputs. Installed replacement 7199 tube. Replaced fuse, connection at fuse holder and set bias. 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. 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. AS-IS sale due to age. This item is in the category “Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps”. The seller is “infinityrecordsusa” and is located in this country: US. This item can be shipped worldwide.

• Brand: Dynaco
• Type: Power Amplifier
• Model: ST-70

Original Dynaco Dynakit Stereo 70 – Fully Working with Mod. Our loving office amp has been replaced. Fully working and has been reliable for 6 months. This ST70 has served us well. Very lush and full bodied sound. Seems to have original driver board but it looks as if there was a mod made at some point that added a daughter board. It may also have something to do with the missing mono/stereo switch. Overall condition is very good for its age. Some patina on the metal but probably can be polished. Some harder to get off dust but generally pretty clean. Grill is in great condition with only a couple minor paint chips. The mono/stereo switch was not installed and runs only in stereo. This can be fixed with parts orders online. Please note with any vintage electronics that there is a chance that a part might fail or need replacement. This has been reliable but you never know. Plenty of manuals and info online in the event you need to replace a part down the line. Please message me once you have made ordered the item. Great amp as is or fantastic restoration piece. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “bkvintagenyc” and is located in this country: US. This item can be shipped to United States.

• Brand: Dynaco
• Type: Tube Amplifier
• Modification Description: Added Board
• Custom Bundle: No
• Model: ST70
• Country/Region of Manufacture: United States
• Modified Item: Yes

Stereo input gain knob, upgraded driver board, upgraded power supp ly filtering board, speaker post for banana plugs. It looks and sounds great. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “bruceroberts” and is located in this country: US. This item can be shipped to United States.

• Brand: Dynaco
• Type: Tube Amplifier
• Model: ST-70
• MPN: ST-70
• Country/Region of Manufacture: United States

Tested, Serviced and upgraded. It has been kept as stock as possible, with only the parts needed to perform its best being changed. Comes with Brand new Matched Quad of TAD EL34-STR REDBASE Power Tubes. Comes with two Speaker cables, Canare 4S11 with small audioquest spades on one end and Banana plugs on the other. This is a pretty well cared for ST-70 that has been serviced multiple times over the years, including just recently and sounds very nice. In addition to the TAD EL34′s it Includes 4 rather old. Other tubes include 2 GE 7199′s. Rectifier has been rewired out of circuit and replaced by solid state rectification, although the tube remains in the socket for looks and receives heater voltage to light it up. All capacitors have been updated. Coupling capacitors and others were replaced with high quality polypropylene film caps for the best sound quality possible. All filter caps have been replaced. Checked and replaced as needed. The chrome has some small pitting and small rust spots but it’s in very good shape compared to most ST-70′s. Quite a lot of solder joints were redone to keep it as trouble free as possible. Cage is in very nice shape. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “tboxlabs” and is located in this country: US. This item can be shipped to United States.

• Brand: Dynaco
• Type: Power Amplifier
• Model: ST-70

Vintage Dynaco ST-70 Dynakit Stereo Tube Amplifier for Repair or Part. Cover is in Excellent Condition. Chasis got Light Rust. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “notjusthifi” and is located in this country: US. This item can be shipped worldwide.

• Brand: Dynaco
• Type: Tube Amplifier
• Model: ST-70
• Country/Region of Manufacture: United States
• Modified Item: No