Vintage Tube Amp

Dynaco Stereo 70 ST-70 Tube Amplifier – Classic Vintage High-Fidelity Power Amp. Stereo 70 (ST-70) is a legendary tube amplifier known for its high-fidelity sound, robust performance, and compact design. Featuring Dynaco Super-Fidelity A-470 output transformers and a patented circuit design, the ST-70 delivers exceptional tonal balance and dynamic response, whether used in stereo or bridged for monophonic 70-watt operation. Each channel operates independently, providing ample power for any efficiency of speaker system, while the low internal impedance ensures tight damping and precise control over your loudspeakers. Key Features & Highlights. Dual 35-watt channels (stereo) or paralleled 70-watt output (mono). High-quality A-470 output transformers for full-range, low-distortion performance. Designed to maintain exceptional fidelity under real-world loudspeaker loads. Dynamic transient response : reproduces percussive and piano notes with clarity, sharpness, and no muddiness. Compact yet robust construction, ideal for home stereo or studio use. This unit is previously used, shows light cosmetic wear consistent with age, and is fully functional, delivering the authentic sound and performance that made the ST-70 a classic. Whether you’re a vintage audio collector, a tube enthusiast, or a musician seeking warm, musical amplification, the Dynaco ST-70 remains a highly sought-after reference tube amplifier with unmatched character and tone. We’re not just sellers, we’re passionate musicians, gear aficionados, and seasoned professionals dedicated to the craft of making music. We take pride in our curated music collection. We love giving these vintage and rare pieces new life through maintenance and upkeep. Our goal is for these units to be at their optimal performance before going to their new homes. Every item you acquire from us undergoes a meticulous inspection process conducted by our team of enthusiasts, studio engineers, and live performers. With full-time technicians on staff, rest assured that each piece is thoroughly examined and tested before being professionally packed. Once your order is in transit, automatic tracking information is provided, allowing you to monitor its journey from our shop to your doorstep with ease. The units/items you see in our pictures are precisely what you’ll receive. Additionally, we offer custom modifications, within reason, to many of the guitars and products we sell, ensuring they perfectly suit your unique requirements. If, for any reason, you’re not completely satisfied, please reach out to us before leaving feedback. Your happiness is our priority, and we’re here to ensure your musical journey is nothing short of exceptional. We’re here to address any concerns and ensure you have a positive experience with Tone House.

This Vintage Untested Mono Integrated Tube Amplifier was made by Calbest of L. A CA, for High-Fidelity Unlimited. It does not come with tubes, but uses 1x 5y3 GT, 3x ECC83, 2x EL 84. The Model Number is 7615 and the Serial Number is A 151224. There seems to be a link between HFU and the Ampex Corp. In some of their consumer audio products. I have seen at least once, 2 exact stereo units, one branded HFU and one branded Ampex. All the controls and functions are shown in the photos. The case is solid wood (no pressed wood or plywood). There is one thing to note condition wise, the front wood section is cracked on the left side of the control panel. You can see this a Photo. It will not affect any function. I have another Tube amplifier, a Harman Kardon, also listed. Please look carefully at the pictures as they are an important part of the description. I desire to keep my feedback as high as possible.

Pair of Dynaco Mark III Amplifiers Dynakit Vintage High-Fidelity UPGRADED. This is an outstanding pair of Mk3s that are very Clean. Both have upgraded VTA 6SN7 Driver boards, New quad Caps, pentrode/Triode switches and Brand New EH 6550′s. Both have been tested and work great. These are ready to go. They will be professionally packaged and insured.

Vintage Dynaco Dynakit Mark III KT88 Stereo Amplifier. This amplifier has been tested and serviced and is in good working condition. Has a set of Svetlana Power Tubes, one is labeled McIntosh and the other straight Svetlana. The 5AR4 Rectifier is an American Made Westinghouse, and the 6AN8 is a Sylvania. True Dynaco Dynakit MK III Monoblock manufactured in Philadelphia. One of the most highly regarded vintage audio tube amplifiers ever built.

Vintage 1950s Pye High-Fidelity HF 5/8 Valve / Tube Amplifier / Amp – READ. A vintage 1950s British. Pye High-Fidelity monoblock valve amplifier. It shows evidence of age (for example, the tops of the transformers, and exposed screw heads, have surface rust). There are NO guarantees with this item. The internal components appear to be mostly original, so this should be good guide for restoration. We expect that most of the 60 year old internal components are too old to be relied on, and would need to be replaced. We have tested the valves individually on an Avo valve tester. It uses a GZ32 rectifier, EL90 and ECC81 valves, and ALL valves test very strong on the test meter. What you see in the photos is what you will receive. If you cant see something, then it is not included. Remember with valve amplifiers that they MUST have a load attached before they are plugged in, or serious damage may occur. This means that you MUST attach a speaker to it before you turn it on. Failure to do so may result in components burning out instantly. Therefore, when you receive it, do NOT be tempted to plug it in to see what it does – take your time to work out how to attach a speaker before trying it out. We suspect that this hasnt been used for 20-30 years as we personally removed it from the workshop of an elderly gentlemen who died recently and it was buried under a mountain of other stuff. For this reason, we suggest that it is powered up very gently using a Variac in order not to shock any internal components with a sudden voltage spike from being turned on for the first time in 30 years. _gsrx_vers_811 GS 7.0.9 (811). The item “Vintage 1950s Pye High-Fidelity HF 5/8 Valve / Tube Amplifier / Amp READ” is in sale since Wednesday, April 3, 2019. This item is in the category “Sound & Vision\Vintage Sound & Vision\Amplifiers & Tube Amps”. The seller is “riverside_retro” and is located in Guildford. This item can be shipped to all countries in continental Asia, United States, European Union member countries, Canada.

• Bundle Listing: No
• Country/Region of Manufacture: United Kingdom
• MPN: Does Not Apply
• Manufacturer warranty: None
• Unit Type: kg
• Brand: Pye