Vintage Tube Amp

Eico HF-81 Stereo tube integrated amplifier. All electrolytic and formed capacitors have been replaced with a mix of Solen, Orange drop and Panasonic capacitors. All front controls have been cleaned and treated with Deoxit products as well. The tubes in the unit have all been tested, Mullard Blackburn EL84 quad that test at 75% life for the output section. The preamp section consists of a mix of (2) Amperex Bugle Boys and Amperex branded globe tubes. Rectifiers are Mullard originals. The Front brass face plate was removed and stripped of the old yellowing clear coat, buffed out and coated with 3 coats of Carnauba wax. The unit underwent a 4 hour bench demonstration running through PSB monitor speakers. At this time all necessary adjustments were completed. A very musically pleasing amp that will definitively please the discerning listener when mated with a moderately efficient pair of speakers. Original owner/ service manual is included with the sale. The outside cabinet does show some signs of age discoloring of the bronze paint, but does not distract from the look of this historical amplifier. The HF-81 fed it all back to me-I heard the synergy, felt the music-just the way a single-ended amp delivers. It was amazing-and to ice the cake, the HF-81 didn’t soften the bass or roll off the top. It was as if I’d taken a Krell, a Spectral, and an Ongaku amp, put them all in that transporter pod in The Fly, then thrown the switch and opened the second pod and, presto -the HF-81. I unconditionally recommend that you find an EICO HF-81, restore it, and hear for yourself what the fuss is all about. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “cleptomaniac13″ 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, Taiwan, 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.

• Brand: EICO
• Type: Tube Amplifier
• Modification Description: Many new parts
• Model: HF 81
• Featured Refinements: Vintage Stereo Amplifier
• Country/Region of Manufacture: United States
• Modified Item: Yes

Eico HF-81 Tube Amplifier – Unit 1. In nice shape with a few nicks, light scratches on cover. Amplifier has been serviced. Amplifier works, sounds good. Unit turns on by moving tape button to right. Tubes: mixed USA brands. _gsrx_vers_1433 GS 9.0.4 (1433). This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “discoveredrelics” and is located in this country: US. This item can be shipped to United States.

• Brand: EICO
• Type: Tube Amplifier
• Model: HF-32
• Country/Region of Manufacture: Unknown

For sale is an Eico HF-81 with a partial restoration already completed. For whatever reason, the previous owner didn’t finish this project, but did seem to stay organized. I simply do not and will not have the time needed to dedicate to this so I want to move it on to the next owner who can. There are wires taped to the bottom cover that appear to have been removed but not replaced. Please see the photo with the bottom cover off. Unit does have some surface rust, especially on the inside of the bottom cover. Unit is in good shape overall. Power tubes are Russian, not sure of the condition of the other old stock tubes. Terms (Please read these). Please message me if you have any gear for sale but dont want to deal with listing. I live in Central California and travel to LA as well as the bay area often! You do not need to live near me. This rules comes from dealing with an older individual who offered an attractive trade if I delivered the speakers to him. This ended up being a tremendous waste of time. I sell mostly vintage electronics. As such, these items are old and typically out of spec from when they were new. I do my best to test these items and make sure they work before theyre sent out, but I do not guarantee or represent that they will meet the original specifications. I may not even be able to test them, in which case assume that they dont work. However, there are times where I may miss something. If that happens, I hope that you would agree that the most efficient way to take care of an issue is if you simply message me before opening a case or doing anything else. I need an outlet for these items online, so I have no reason to send you something that doesnt work unless Ive noted that it doesnt. I pack items correctly. I know what it takes to get an item to you safely. You will NOT have to ask for it. I will do my best to get items out within a few days, however there are instances where that is not possible. The policies here are difficult in this regard because these vintage items in particular need to be moved and packed carefully. I do not want to damage anything by rushing. With this all being said, if there is any reason that you dont feel that you can leave FIVE stars in every category, please reach out to me before leaving any feedback other than positive with all five stars in every category. Please message me to work this out. The item “Vintage Eico HF-81 Stereo Tube Amplifier Partially Restored Read” is in sale since Monday, October 18, 2021. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “doublewalledbox” and is located in Hanford, California. 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, Taiwan, South africa, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, 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, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.

• Model: Eico HF- 81
• Featured Refinements: Eico HF Vintage Amplifier
• Type: Tube Amplifier
• Brand: EICO

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. Full blown restoration of this great vintage integrated. In rare near-mint condition with a great patina on the brass faceplate. Vintage tubes all around. Wonderfull collectible piece in rare condition, plus it also includes a custom cover. SkyFi Notes on the Restoration: This piece came to us having already underwent an extensive restoration. Here is a rough outline of what we picked up on during our testing and review process: Chassis painted black instead of the original stock raw metal. Chrome tube cages added. Full recap including a new CE multi-section can, axial electrolytics, a mix of film and PIO coupling caps, and select micas. 3-prong grounded power cord added. SEP, COM Switch removed from circuit. Phono grounding lug added. This was a top notch restoration in all respects. Tube Notes: The rectifier tubes are current production Electro-Harmonix. The output tubes are all vintage GE, save for one branded Zenith. T he 12AX7s are GE branded, and the 12AU7s are a mix of Sylvania & Philips. All tubes were tested on our modern and professional Amplitrex AT-1000 tube tesrter, and were also confirmed working properly in circuit. Four x ECC83/12AX7 Four x EL84/6BQ5 Two x EZ81. 14Wpc (11.5dBW) continuous into rated load. Frequency response (at 1W into 8 ohms). ±15dB at 50Hz and 10kHz. IM distortion (60Hz and 6kHz at 4:1). 2% at 14W, 0.05% at 5W. Sensitivity (input for 14W). Mag phono 4mV Tape head 2mV Mic 5mV Aux and tuners 500mV. 4, 8, 16, and 32 ohms. 15″ (385mm) W 4-3/4″ (120mm) H 10-1/2 (270mm) D. 24 lbs (10.9kg). EICO, Electronic Instrument Company, Long Island City, NY (1960). The SkyFi Testing Process for Tube Amplifiers: We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and tubes are inspected for signs of stress overheating or cracking. We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If it all looks clean we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier the remains powered on to “burn in” on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will also be tested. We also test all tubes for output gain and leakage on our calibrated B&K 747 tester against the original manufacturers specifications. If needed, the tubes will be replaced from our vast NOS (New Old Stock) vintage or modern inventory. Final testing involves pushing actual music thorough the amplifier. We’ve learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage KEF speakers that we’re very familiar with which quickly reveal any discrepancies. Some amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice. We have too many items for sale and its 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 were 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. Were not a store, so please dont make an appointment if youre 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. Its also great for ensuring your new turntable is setup correctly in its final resting place. The item “Eico HF-81 Vintage Tube Integrated Amplifier Fully Restored 1960′s Magic” is in sale since Wednesday, July 21, 2021. 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 Glen Rock, New Jersey. This item can be shipped to United States.

• Brand: Eico
• Type: Tube Amplifier
• MPN: HF-81
• Model: HF-81

Original vintage Eico HF-81 Stereo Hi Fi Tube Amplifier. Original owner estate find, carefully stored in garage for decades. Looks to be in fairly well preserved/original condition. No cleaning, testing or hook-up of any sort was performed. Measures about 15″W X 5″H X 9-3/4D, weight 24 lbs. Has the name’Boles’ etched on top edge. Check the pictures and decide for yourself if this is something you can use. Please check pictures carefully for details, what’s included & best description. We try to describe our merchandise as honestly and completely as we can, including actual photos. We use recycled packing materials whenever possible to help the earth and to keep costs down. The item “VINTAGE EICO HF-81 TUBE STEREO AMPLIFIER HI-FI AMP” is in sale since Friday, August 13, 2021. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “twin-thunder” and is located in Bakersfield, California. This item can be shipped to United States.

• Model: EICO HF-81
• Country/Region of Manufacture: United States
• Featured Refinements: Vintage Stereo Amplifier
• Type: Tube Amplifier
• MPN: HF-81
• Brand: EICO

EICO HF-81 VINTAGE INTEGRATED STEREO TUBE AMPLIFIER. Upgraded (including capacitors) and serviced in 2016 by Scott Frankland Associates in San Jose, California. Bench tested on January 10, 2019 — fully functional — sounds great. Relatively good mechanical and cosmetic condition for its age (see pictures). Includes complete set of 12 vacuum tubes (see pics). 2 x JAN Phillips 12AX7WA (phono stage). 2 x PrimaLuna 12AU7 (input stage). 2 x Tung-Sol 12AX7 (driver stage). 4 x Electro-Harmonix EL84EH (matched quad – power amplifier). 2 x Eico EZ-81/6CA4 (power supply rectifier). All tube sockets and tubes will be marked with masking tape to show where to reinsert them. The HF-81 Integrated Amplifier will be packaged with the utmost care.. 1 Amplifier will be sealed inside of plastic to keep out packing materials and dust. 2 Sealed amplifier will be wrapped with bubble wrap, as will all tubes, each individually wrapped. 3 Bubble wrapped amplifier and tubes will be placed into box with compressible packing peanuts. The item “EICO HF-81 VINTAGE INTEGRATED STEREO TUBE AMPLIFIER” is in sale since Thursday, January 17, 2019. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “mkt03″ and is located in Pearland, Texas. This item can be shipped to United States.

• Brand: EICO
• Type: Integrated Amplifier
• Country/Region of Manufacture: United States

EICO HF-81 Vintage INTEGRATED STEREO. Cosmetically it’s in good condition with minimal scratches. I did not cleaned the front because the lettering may came out. Please see all the pictures for details of cosmetics. More detailed pictures will be send upon request. One of the tubes (EZ81) is not good, I will replace it and put a new picture. This is a very nice example of a very desirable amplifier, could use a full restoration but is a good starting point that is plug and play. The item “EICO HF-81 Vintage INTEGRATED STEREO TUBE AMPLIFIER” is in sale since Tuesday, April 04, 2017. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “my-baby-world” and is located in Oakland, California. This item can be shipped worldwide.

• Brand: EICO
• Type: Tube Amplifier
• Country/Region of Manufacture: United States
• Model: HF-81

Vintage EICO HF-81 INTEGRATED STEREO TUBE AMPLIFIER. The item “Vintage EICO HF-81 INTEGRATED STEREO TUBE AMPLIFIER” is in sale since Thursday, July 27, 2017. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “danrag1015″ and is located in Mahwah, New Jersey. This item can be shipped to United States.

• Brand: EICO
• Type: Tube Amplifier
• Country/Region of Manufacture: United States
• Model: HF-81