Traynor YRA-1 Reverb Master Tube Guitar Amplifier Head Amp Vintage Rebuilt. This amp is fully functional. It was completely refurbished and rebuilt probably 8-9 years ago. It’s been sitting in my living room ever since. I had a friend who can actually play guitar test everything out and the amplifier is working flawlessly. All the tubes are fully functional. Please feel free to reach out if you have any questions.
These are completely rebuilt vintage Allen Organ C3 amplifiers that are in excellent working condition. Plug & Play ready, comes with all working tubes as seen for each amplifier and power plugs. They are quiet, punchy, with a wide soundstage, strong bass and have easily outperformed many challengers in my listening room including vintage Macintosh 225, 240, etc. These amplifiers are highly rated in the audiophile community. Many close up photos, schematic details, vintage history and new engineering are available at the Audio Karma website, “The beastly beast Allen Organ C-3″ – to read more. Also listed under the same screen name on Audiogon.
Eico HF-81 Vintage Integrated Tube Amplifier – Fully Rebuilt. General: The Eico HF-81 is a classic example of an excellent sounding 1960′s integrated tube amplifier. This vintage beauty has a full tube preamp and power amp delivering up to 14W of warm tube power. This is a rather rare combination for an integrated amp, as most are a hybrid designs with a solid state preamp a tube amp (or vice-versa) like the McIntosh MA230, MAC1500, etc. We were truly impressed at the sound quality of this piece during long-term testing on our test rig. In particular we thought vocals sounded fantastic, especially period correct Elvis and Sinatra. This particular HF-81 was completely overhauled before arriving into our shop and performed excellent in all of our bench and long-term listing tests. This HF-81 will come to you with a reprinted manual and a custom made dust cover. SkyFi Cosmetic Notes: This piece received a cosmetic overhaul at some point in the past. All chassis parts were repainted. The transformers were painted as well. It also appears as though all new hardware was installed. The manual is a reprinted copy. No silkscreen in present on the rear panel, but we’ll provide a printed diagram with all of the input labels and tube locations. SkyFi Technical Notes: This unit came to us having already undergone an extensive electronic restoration. Here is a rough outline of what we picked up on during our testing and review process. This unit was fully recapped including a new CE multi-section can, axial electrolytics, a mix of film and PIO coupling caps, and select mica capacitors. Select resistors replaced, modern three prong power cord added, SEP/COM Switch removed from circuit, a power switch was added to the rear panel, and a phono grounding lug was installed. Tube Notes: The rectifier tubes are current production Electro Harmonix. The output tubes are Groove Tubes EL84, the 12AX7s are a mix of Sovtek and GE, the 12AU7s are Sylvania. Both channels tested clean to about 9W into 8 ohms, both channels driven. The only electronic issue that we identified was a channel imbalance in the volume control. We opted to replace the volume control with an Alps “Blue Velvet” control. The channel balance of the volume control is now excellent. Slight drift in the balance control, however, results in the need for the balance control to be shifted just slightly to the left of center for ideal performance. Ownership: Second Owner Connections: RCA, Speaker bidning posts. Ground screw down terminal General Sound: Smooth, uncolored, undistorted natural and clean Cosmetic Condition: 8/10 = Very Good. Excellent front faceplate, one minor flaw on chassis side or top. Working Condition: Working perfectly and tested in our lab and listening room. Included: Unit, manual, and power cord. Packing: Will be packed using our highly developed in-house process and custom packing materials. Specs: Tube Complement: Four ECC83/12AX7 Four EL84/6BQ5 Two EZ81. Maximum output power: 14 WPC (11.5 dBW) continuous into rated load. Frequency response (at 1 W into 8 ohms): 10 Hz – 100 kHz, ±0.5 dB. Tone control range: ±15 dB at 50 Hz and 10 kHz. IM distortion (60 Hz and 6 kHz at 4:1): 2% at 14 W, 0.05% at 5 W. Sensitivity (input for 14 W): Moving Magnet Phono 4mV Tape head 2mV Mic 5mV Aux and Tuners 500mV. Speaker Connections: 4, 8, 16, 32 ohms. Dimensions: 15″ (385mm) W 4-3/4″ (120mm) H 10-1/2 (270mm) D Weight: 24 lbs. Testing Process: We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect resistors and other passive components for signs of overheating. If tube arcing has occurred in the past we can usually spot discoloration on the output tube sockets. On vintage units we often spot check select capacitors for value and ESR. If the amplifier passes visual inspection, we move on to a full test of all of the tubes. We use a modern Amplitrex AT-1000 Professional Tube Tester which is capable of testing both emission and Gm with a high degree of accuracy. We document the results of each tube and replace any weak or suspect tubes before proceeding. When we power on tube amplifiers for the first time we usually use a variac and current limited AC supply and slowly raise the voltage up to nominal mains level while monitoring plate, screen, filament, and negative bias supply voltages where applicable. If everything is in order we feed a low level test signal into the amplifier’s input and monitor its output on an oscilloscope across an 8 ohm dummy load. At this point we are just looking to verify basic function and confirm that the output transformers are not damaged. Once we have verified that the amplifier is safe to operate, we connected it to full mains power. For cathode biased amps we monitor the plate to cathode voltage to determine if the output tubes are operating in a safe range. Once the output section is verified we move onto bench evaluation. We start by feeding the input of the amplifier with a low level 1 KHz test signal, slowly increasing its amplitude while monitoring the amplifier’s output on an oscilloscope for signs of noise, clipping, distortion, or improper channel balance. We continue increasing the signal level until the amplifier reaches clipping. At this point we take an output power measurement and compare it to the spec sheet of the amplifier to verify proper performance. We finish off the bench evaluation with a 1 KHz square wave check and a 20 Hz to 20 KHz sine sweep to assess the amplifier’s frequency response characteristics. This battery of tests will usually reveal if the amplifier has any issues that need further attention. Before the device leaves the bench we perform a listening test with actual music using a variety of preferred test tracks. Our benches are outfitted with familiar monitor speakers which help us identify inconsistencies that will not always show up on our test gear. The main things that we are listening for are hum or noise with no signal present, proper center image, clicks, pops, or any other obvious undesirable audio characteristics. If the unit passes all of these tests it is moved to our long term testing rig where we simulate real word operating conditions for 6-8 hours minimum. For tube amps we like to run this test at least twice. This allows us to monitor the unit for signs of thermal runaway or intermittent issues that only crop up when it has fully come up to temperature. We find this step to be essential, especially for vintage units. Please note we are not a repair shop and only restore what we own. SkyFi Audio – Curators of Vintage Audio Gear. If we don’t have the original packaging, we use heavy-duty double-ply corrugated boxes with custom made to your item SealedAir Instapak expanding foam custom inserts. In many cases this has proven to be better than the original packaging! We also use high quality fiber reinforced tape to seal our packages. We have too many items for sale and it’s nearly impossible to keep track of offers outside of the official system. Our items are available for pick-up. No additional information at this time. You might also like. Dynavector 10×3 High-Output MC Phono Cartridge. Music Reference RM-5 MK II Tube Preamplifier with Phono. WyWires Silver Series Phono Interconnects – 5 Pin DIN w/ XLR Connectors – 4ft. Music Reference RM-9 Tube Amplifier With EL34′s.
I just removed this amplifier from its original cabinet. I have rebuilt, hundreds of Leslie amps. I use premium parts, solid-state relays, and discrete electrolytic’s. Every single passive component has been replaced in this amp and it has been thoroughly tested. The hammered finish is beautiful with a few rusty spots on the back. This does not include tubes. Please watch the video to hear this in action.
Experience the classic sound of the Eico HF22 tube amplifier, meticulously rebuilt to deliver optimal performance. These monoblocks, featuring 6L6 US tubes, are the perfect addition to any vintage audio collection. All tubes tested and are strong. Their unique design, crafted in the United States, makes them a rare find. You will receive these just as I did. These have very large power transformers as you can see. These Vintage Eico HF22 tube amplifier’s are a gem for audiophiles who appreciate the sound of classic tube amps. They a great addition to any vintage audio collection, With meticulous rebuilding, these monoblocks are guaranteed to deliver optimal performance. I have always used a quiet cooling fan on all my tube equipment too keep temps down. Thank you for looking.
For sale is a bogen rf-35 all tube receiver… Nice condition with it’s original hardwood cabinet. All electrolytic capacitors have been replaced. It has been’scoped and works as it should. It has had the output transformers replaced with oversized appropriate units. It has 2 x 6v6gt tubes per channel. They are 4 different versions of the 6v6gt tube but work fine. Puts out about 18 watts per channel. I have been repairing and building tube guitar amp, hi-fi and recording gear for over 40 years. I have run tube amplifier repair businesses solo in San Francisco, New Orleans and now, Clarksdale Mississippi. To optimize a piece of hi-fidelity, tube guitar amp or recording gear is a passion for me. Whether it is a Fisher receiver, a Harman Kardon Citation power amp, or a Fender Tweed guitar amplifier, I strive to have it working like new, or, better than new. I have vintage and modern hi-end replacement parts on my shelves ready for re-cap jobs, drifted resistor replacement and upgrades. Transformer selection, custom bias networks and tube choices are specialties of mine. I work with each customer to find the right solution to fit their needs within their budget. When your amp comes to me it leaves happy..
You are viewing a listing for a vintage Wurlitzer model 503 tube amplifier that has been rebuilt and is in good working order with tubes included. This unit was painted at one point in time once already but the paint had been chipped badly so was painted again there for finish is not perfect. Other than being recapped and painted unit is pretty much original and should be a direct drop in to replace a non working unit. On its own the amplifier has very good sound and could be used by itself but remember these are designed to use a 5200 ohm field coil speaker and will not operate without this unless circuit modifications are made to the power supply. Tubes will be removed and packed separately in their own box which will then be packed with the amplifier. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “amac4993″ and is located in this country: CA. This item can be shipped to Canada, United States.
Here’s a fabulous vintage VM tube amplifier. This is an amplifier/speaker that originally complimented a VM reel to reel player. You can use this with an iPhone, iPad, CD player, etc.. There’s a convenient RCA input on top, along with a 1/4 Jack for a microphone! The 6V6 amplifier has been redone with all new capacitors and resistors. Including a new crossover capacitor in the dual speaker section. There’s a great little red pilot lamp in the front, that lets you know the unit is on. Works and sounds like new! Beautiful, warm, full tube sound is what you get. From this fun and unique unit.. The top lid is hinged and also removable. There’s a neat little storage area inside too! The original cabinet covering is still in decent shape, having some common wear from age and use, see photos. An all together beautiful sounding vintage mono amplifier. Perfect for use with a CD player, iPhone, iPod, etc.. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “jerseyshorevintage” and is located in this country: US. This item can be shipped to United States.
