This sale is for a. Vintage Roland 1861 Tube Amplifier Powers on Untested. This amplifier has been power on only. No further testing has been done. Tubes glow and light lights. You will receive the exact item shown. Please make sure you look through the pictures.. We are not in on the weekends, so if a question is sent past 5:00 cst Friday we will not be able to reply until Monday. Monday-Friday 9:00 a. NO-DOA (Not Dead on Arrival). These items may be vintage, collectible, or specialty items that we do not have the technical capability to test or repair. Midwest Computer Brokers, Inc. Visit us at mcbia.
Vintage EICO HF-12 12-watt mono tube amplifier, previously modified from its original hi-fi configuration for apparent guitar/instrument amplifier use. This is an interesting restoration or further-conversion project for a tube guitar amplifier builder or vintage audio enthusiast. CURRENT CONFIGURATION – Original EICO HF-12 chassis, enclosure and transformers. Original four-position input selector removed and replaced with a front-mounted 1/4-inch input jack. Three remaining front controls: volume, bass and treble. Original rear audio inputs removed. Rear 1/4-inch speaker output jack added. Original speaker terminal strip remains, with altered connections. The 8-ohm terminal is presently unwired. Original decorative front faceplate is missing. Replacement Mallory electrolytic capacitors installed. Three-prong grounded-style power cord installed, but protective grounding has not been verified as satisfactory. Other previous wiring and component changes are visible. ELECTRICAL TESTING PERFORMED The amplifier has NOT been powered up or audio-tested. Resistance and continuity measurements were performed with a multimeter. Output transformer: – Primary end-to-end: approximately 341 ohms – Primary halves: approximately 187 and 154 ohms – Secondary G-4? : approximately 0.9 ohms – Secondary G-16? : approximately 1.3 ohms Power transformer: – Primary: approximately 40 ohms – Heater winding: approximately 0.4 ohms – High-voltage secondary: approximately 205 ohms total – High-voltage secondary halves: approximately 105 and 98 ohms No open windings were identified in the circuits measured. These are resistance/continuity measurements only and do not establish transformer performance under operating conditions. IMPORTANT ELECTRICAL CONDITION The three-prong power cord was checked for continuity between its grounding pin and the metal chassis. Meter lead resistance: approximately 0.2 ohms – Grounding pin to chassis: approximately 2.5-2.7 ohms The protective chassis-ground connection requires further inspection and verification. The power wiring, capacitors, previous modifications and overall electrical safety have not been fully evaluated. DO NOT CONNECT TO AC POWER UNTIL PROPERLY INSPECTED AND SERVICED BY A QUALIFIED TUBE-AMPLIFIER TECHNICIAN. RESTORATION POTENTIAL The EICO HF-12 originally used a push-pull EL84/6BQ5 output stage rated at 12 watts in its factory configuration. The existing instrument-style conversion offers an interesting starting point for a vintage guitar amplifier project. Actual instrument input characteristics, operating condition, output power and sound have not been verified. The amplifier could also be considered for restoration toward its original hi-fi configuration. This would require sourcing missing controls, connectors and faceplate components, tracing the wiring and making appropriate circuit repairs. Not represented as a working or electrically safe amplifier. Includes the amplifier and installed components as photographed. No additional accessories are represented as included. Please review the detailed photographs of the chassis, underside wiring, transformers, controls and connections.
Western Electric KS-15750-L1 Tube Tester manufactured by Hickok and designed for professional mutual conductance (Gm) tube testing. This highly sought-after tester was originally built for Western Electric/Bell System service applications and is widely respected among vintage audio collectors, tube enthusiasts, and electronics restorers. May require restoration, calibration, or replacement parts. Please review all photos carefully to determine completeness and cosmetic condition. Only the items shown are included. A rare opportunity to own one of the finest vintage tube testers ever produced. Western Electric, KS-15750-L1, Hickok, Hickok 1575, RD1575, tube tester, vacuum tube tester, mutual conductance, Gm tester, Bell System, Western Electric tester, vintage electronics, audio restoration, tube amplifier, audiophile, vacuum tubes, antique radio, electronics test equipment, collectible, parts repair, restoration project.
Please check the item specifics as it may contain details which you are looking for. We offer a handpicked collection of high-quality items, available exclusively in the U. Check item specifics and photos to ensure you make the perfect choice. While we strive to offer detailed images, it’s not always possible to verify every aspect of the item. Therefore, we apologize if the product does not meet your expectations.
FOR REFERENCE – SEE THE PICTURES. FOR PARTS OR NOT WORKING. IN GOOD VINTAGE CONDITION WITH SCRATCHES, SPOTS, RUST, DISCOLORATIONS AND SIGNS OF USE. WITH ATTACHED POWER CORD. PLEASE, SEE OUR OTHER ITEMS! GOOD LUCK AND THANK YOU FOR LOOKING!
1976 Fender vibrolux Reverb Silverface Vintage Tube Amp w/ Original Flip Switch, transformer and tag board. This unit was serviced about two weeks ago. The caps were changed and 1 tube was replaced, as well as the power cable. Your chance to own a genuine pc of Fender History. This amp sounds incredible. Please see photos for best idea of cosmetic condition.
Please review all photos closely – they’re considered part of this listing’s description. Brand: Sherwood Electronic Laboratories, Inc. Model: S-1000 II Amplifier (mono integrated tube amp). Serial Number: 6488. Power: 110-120V, 60 Hz, rated 105W. Country of Manufacture: Made in USA. Controls: Selector (Phono A/B/C, Presence, Tape, Scratch Filter, Rumble Filter, Phono Level), Equalization (AES/RIAA/Lon/LP/Ewr/Tape/Mic), Bass, Treble, Loudness (with Loudness In/Out switch), Tape Monitor (Norm/Mon). Output taps: 4 / 8 / 16 ohm speaker terminals. Includes: Amplifier unit only. CONDITION – Untested (Not Powered), Tubes Individually Verified. Tubes were pulled and bench-tested on a Sencore TC142 tube checker: 6L6 tests at 85% emission (GOOD range); 12AX7 tests at 100% emission (GOOD range) – this confirms the tubes themselves are healthy, but does NOT confirm the amplifier circuit, transformers, or capacitors function correctly. Top panel shows significant cosmetic damage: multiple names/initials scratched into the metal finish, plus general scuffing and scratching across the top surface – see photos closely, this is more than typical surface wear. Control knobs show grime/wear consistent with age; front panel lettering and chrome trim otherwise legible and intact. Not inspected for capacitor condition, cord integrity, or continuity beyond the tube bench tests described above. This is tube-era, mains-connected equipment that has not been powered on or serviced. Internal capacitors likely need replacement before use, and high voltages are present inside the chassis once powered. Strongly recommend a full inspection, cap job, and cord check by a qualified tech before first power-up – do not simply plug this in. Model: S-1000 II. Type: Integrated Tube Amplifier (mono). Condition: Used – Untested (Not Powered), Tubes Bench-Verified Good. Country/Region of Manufacture: United States. Items made in America are tariff exempt. Questions welcome before purchasing. Photos are part of the description, please inspect closely. We do our best to accurately photograph the item. Claude AI and Gemini are use to help develop listings. The listing is reviewed by a human to ensure accuracy. However, mistakes are still possible. If you believe there is a mistake or wish to confirm a detail, please send me a message and you will get a reply from a real human! Thank you for purchasing with us!
VINTAGE EXCELLENT CONDITION 1979 FENDER AMP! The Fender Champ Tube Amp 1979 is a 6-watt combo amplifier designed for electric guitars, perfect for practice venues. This vintage amplifier features a single 8 speaker with an impedance of 3.2 Ohms, making it suitable for creating warm and rich tones. With its vacuum tube technology and classic Fender brand, this amp offers a unique and authentic sound for guitarists looking for a vintage feel. Made in the United States, this amplifier is a valuable addition to any musician’s collection.
Vintage BOGEN stereo tube amp. Powered on briefly a few years ago. The pilot light and tubes glowed as expected. No further testing done. Has not been plugged in for at least 4 years. Will be well packed, tubes individually wrapped.
