Vintage Tube Amp

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

This listing is for a v. Intage Dynaco ST-70 Stereo Tube Amplifier. It’s fully tested and everything works as should be. Both channel are balanced and loud… Please note: This amp is over 50 plus years old, it may needs some upgrades. It has some light pitting and rust on the body considering it’s age. All the parts are original Dynaco’s excluding the tubes…. It comes with the original manual, Schematic, quad realistic lifetime 6CA7/EL34, 7199 x 2, GE 5AR4 vintage tubes. Lease take a look at the pictures for more details and information, they’re part of the description. 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. Please message us if you have any farther questions, thank you. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “amity50″ and is located in this country: CA. This item can be shipped to Canada, United States.

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

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

Vintage Dynaco ST-70 Tube Amplifier. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “5qc7w-34″ and is located in this country: US. This item can be shipped to United States.

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

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

Fully tested and recently serviced. Amplifier is in good cosmetic condition. Some rust inside tube cage, and lettering has come off the chrome with time. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “colmcc-79″ and is located in this country: US. This item can be shipped to United States.

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

Dynaco ST-70 with Van Alstine “Ultimate 70″ mods. This is a legendary amplifier and a piece of audio history that’s been modernized by Frank Van Alstine. The mono/stereo switch has been removed, input and speaker jacks have been rewired and replaced, and a heavily upgraded circuit board has been installed. Current output tubes are Psvane EL34B; Cosmetics are 8/10 due to some rubbed off lettering on the chassis. I live in suburban Portland, Oregon. Problems are few, and I’m very pro-active about solving any that might crop up. Please examine the pictures carefully. They are part of the description. This is NOT a new component. As such, it does not come with any guarantee– implied or written. Vintage audio equipment is sensitive and does not travel particularly well. So in rare instances, that which was working 100% at my house may require adjustment or servicing before working equally well at yours. Most on-line 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. Spoiler Alert: They will NOT allow this. But please understand: I simply clicked a box making this available to International buyers. Here are a couple that my International customers have successfully used in the past and have a good reputation: Nippon Express USA or U. Both are located in San Pedro, CA. Contact info is available on-line. I’m looking forward to doing business with you and earning more of it in the future. I absolutely LOVE this stuff, and you will find me to be a reasonable, fair-minded person to deal with. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “marpentrac_0″ 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, Korea, South, 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, Croatia, Republic of, 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, Uruguay.

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

No mid-fi, no gimmicks, no junk. Each piece of equipment is cosmetically restored and fully tested in our well-equipped lab by an engineer with 30+ years of experience in the HiFi world. Through our sister company, which is an authorized dealer for McIntosh, Audio Research, Sonus Faber, ClearAudio, Project, and Sony ES, we have access to OEM parts, service, and support. This amplifier is a hot rodded version of the famous Dynaco ST-70 stereo tube amplifier. The modification kit was provided by and is referred to as the ST-120. This kit features larger power and output transformers which enables the amp to handle larger output tubes. This amp is currently fitted with KT-90 type tubes but can also run 6550′s and others. It has two top panel mounted switches that allow it to be toggled between Triode and Ultralinear modes. Triode operation yields about 40W per channel while Ultralinear delivers close to 60W per channel. The kit builder converted the front panel stereo / mono control to a 4 ohm / 8 ohm switch. The unit also features a WZ68 solid state rectifier. Yes – Printed Copy. Yes – Power Only. We have too many items for sale and it’s nearly impossible to keep track of offers outside of the official system. We accept trade-ins of equal or lesser value under certain conditions. Please visit our website to submit your gear for full consideration. We will only consider high-end equipment from mainstream manufacturers such as McIntosh, Mark Levinson, Audio Research, Krell, etc. And will typically pass on displays, projectors, receivers, dated surround processors, and mid-fi equipment of any type. We will offer a fair value for your equipment, but keep in mind we’re running a business and will need to be able to resell the equipment at a profit after investing a great deal of time and resources in testing, certifying, repairing, cleaning, and packaging the incoming equipment. SELL US YOUR GEAR (Working or Broken). Simply visit our website to submit your gear for full consideration. We are currently operating from our shop inside our dedicated building in Glen Rock, NJ. We have several well-equipped and dedicated listening areas, plus a dedicated listening studio with tons of equipment of all makes and models. We’re not a store, so please don’t make an appointment if you’re just curious as to how a speaker or piece of equipment sounds. In essence – no tire kickers please. This is super useful when purchasing large speakers or heavy amplifiers. It’s also great for ensuring your new turntable is setup correctly in its final resting place. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “skyfiaudio” and is located in this country: US. This item can be shipped to United States, Canada.

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