Power output: 25 watts per channel into 8? (stereo). Frequency response: 25Hz to 25kHz. Total harmonic distortion: 0.8%. Input sensitivity: 4.4mV (MM), 440mV (DIN), 280mV (line). Signal to noise ratio: 80dB (line). Channel separation: 50dB (line).

BRAND NEW CONDITION BOTH TUBES WORKING EXCELLENT WITH CLOSE BALANCED PLATES. TESTED VERY GOOD WITH 45 MIN 82,83…81,83 NO LEAKS NO SHORTS. THIS PERFECT MATCHED PAIR WILL SAOUND GREAT. MADE WITH COPPER GETTER SUPPORTS & DARK BLACK PLATES. EACH TUBE MADE THE EXACT SAME = EACH TUBE MADE 1961 MATCHED CODES. YOU GET THE 2 TUBES IN THE PHOTOS. GREAT SOUNDING 6072A TUBES. Please note that collectible items like vacuum tubes have a limited lifespan and may not last forever. We recommend reviewing the item description and condition carefully before purchasing. Your satisfaction is important to us, and we appreciate your understanding of the unique nature of collectible items!

Fisher 80AZ Monoblock Amplifiers. These Amplifiers are the best sounding amplifiers I’ve ever heard in my life. They’re THAT GOOD. These beauties are not just amplifiers; they’re a symphony of craftsmanship and sonic bliss. Running and sounding absolutely perfect, with flawless matching sound. Timeless Design: The Fisher 80AZ exudes classic charm. Place them proudly in your listening room-they’re conversation starters! Jaw-Dropping Performance: These amplifiers perform like virtuosos. The sound quality rivals the legendary McIntosh MC-30, and dare we say, even surpasses it in certain aspects. Zero Hiss or Hum: Immerse yourself in pristine sound. No distractions, no interference-just pure audio nirvana. EL37 Power Pentodes: These tubes breathe life into your music revealing nuances you’ve never heard before. Dimensions: Compact and elegant, measuring 4-1/4 x 15-1/2 x 6-7/8inches1. Why Choose the Fisher 80AZ? Uncompromising Sound: Whether you’re spinning vinyl, streaming digital tracks, or enjoying your favorite radio station, the Fisher 80az elevates your listening pleasure. Investment-Grade: Vintage audio equipment appreciates over time. Owning a pair of Fisher 80AZ monoblocks is not just about music; it’s an investment in history and craftsmanship. Collector’s Dream: Audiophiles and collectors alike covet these monoblocks. Don’t miss your chance to own a piece of audio heritage.

This tube (7062/ E180CC) is virtually the same as a 5965 in regard to electrical specifications. Like the 5965, it has slightly lower gain than the 12AT7, and has the added advantage of a 10,000 hour heater life to make it another audiophile “secret” tube. These are superb tubes. This tube is about a half-inch taller than the standard 12AT7, so chassis space is an important consideration. Amperex Made in Holland 7062. ULTRA RARE BUGLE BOY LOGO. TEST RESULTS IN PHOTOS ON BOXES. Tv7 tested NOS TUBES. 90 % of our tubes are Tv7 tested some can’t be tested using the tv7. We have a variety of testers available. All our tubes have been tested for. GAS SHORTS TRANSCONDUCTANCE & EMISSIONS. Please see my notes on noise tests below. Test Results are available upon request. We have a few different testers available to ensure the quality of the tube (as some tubes can not be tested on the tv7). Tubes tested on tv7u the Military standards were tubes needed to meet 60% (minimum value). Tv7 testing is tedious and I spend 12-13 hours a day testing tubes and double testing tubes – if you notice a mistake(like a picture doesn’t match the title) please be gracious and let me know. Thousands of tubes to be listed within the coming weeks! We have over the last 20 years amassed a huge collection of vintage amps/ parts / tubes and have decided to downsize that collection. Every tube has been marked for tracking and security purposes – these marks wipe off easily and without the mark no return will be accepted. NOISE TESTING a little information and guide. Tube testers do not test for these problems in the manner in which you think, except to the extent that a tube tester with sensitive leakage detection will find far more “noisy” tubes than a tube tester with only “fair” leakage sensitivity, to the extent that the noise is due to this problem. Loose elements or other defects will not be found. This is a very marginal test, only for. This test needs sound amplification; hearing listening to noise with headphones would indicate a real disaster inside a tube (THE shorts test WOULD already BE evidence OF THIS). There is nothing wrong with performing that noise test. However, this test is not going to tell you whether the tube will be silent in your SET (single ended triode) amp or in anything else. Ultimately, the best way of testing a tube for microphonics is in an actual chassis or amplifier similar to one in which it is intended to be used. Since amps have a wide variety of circuit designs and tube placement, this test is most effective in YOUR AMP or one that is almost identical. Hence, most people advertising tubes as tested for Noise or Microphonics is probably NOT testing them in any meaningful way for you. True “noise testing” (other than using the tube in the exact equipment you plan to use it.) requires a highly sensitive mechanical-based or vibration-based test apparatus, and such devices were ONLY created and used by professional engineering and testing labs run by very large entities back in the old days- such as the US military, Westinghouse labs, etc. Furthermore, “Noise” and “Microphonics” are often buzzwords for other issues. There is a small percentage of tubes that have a problem with noise but far less than most people think. In properly designed circuits objectionable “tube noise” is seldom found. In other words, it is a rare tube that will be noisy when used in most circuits. So if you find yourself rejecting more than one or two tubes because of “noise”, then you probably have an aggressive circuit design or other design issues (such as transformer placement, shielding, etc).

I bought this piece all dusty and without been used for years from a garage sale a few years ago, it had one broken tube. I’m adding pictures of the old capacitors, the old tubes (two are MULLARD Fat Brown base EL34 Xf1 still good and the other two are old xf2 black base EL34 tubes), the receipt for the service and a Manual I print out.

The serial number of the A333A is 2,002. I also include an original data sheet for the A333A. As the pictures show, the amplifier is in pristine condition. All the paint is perfect and so is the lettering.

Vintage Altec Lansing 303C Tuner Pre-Amplifier perfect working. ALTEC built legendary seminal audio equipment which were second to none! This listing is for the 303C Tuner Pre Amplifier only! The serial number of the 303C is 1846. As the pictures show, this unit is in pristine condition. All the paint is perfect and so is the lettering on the front panel. If you have questions, please ask. What you see is what you get. Listing does not include anything not mentioned in the description and / or shown in photos; ask if in doubt.

38 NOS NIB 12AL5 NOS NIB TUBES MADE BY RCA BRANDED UNITED. YOU GET THEM ALL. EACH TUBE IS 100% BRAND NEW OLD STOCK. HIGH GRADE 12AL5 / HAA91 TUBES FOR YOURE AMPLIFIER NEEDS. THIS LARGE COLLECTION IS 100% GUARANTEED. THE BOXES AND THE TUBES ARE ALL IN BEAUTIFUL SHAPE. YOU GET EVERYTHING IN THE PHOTOS FOR THE PRICE. HIGH QUALITY RCA MADE TUBES. MADE IN THE 1960′S IN THE USA.

The Dynaco Stereo 410 is a two channel power amplifier employing all silicon semiconductors. They include 38 transistors, 2 zener diodes, 24 diodes, and 3 thermal sensors. The output circuitry is of the full complementary symmetry design. The entire amplifier, except for an input network, is direct coupled. It’s measured distortion levels approach the threshold of much laboratory test equipment, not only at the commonly specified full power ratings, but more importantly at very low power outputs as well. This is the result of circuit techniques which eliminate any discernible crossover notch at low levels, and contributes to the Stereo 410′s freedom from listening fatigue. It’s accurate, uncoloured sonics have been achieved on a wide variety of loudspeaker loads, including electrostatics and multiple drivers with complex crossovers. The design of a superb power amplifier implies the necessity of several protection techniques for the amplifier, and for the speaker load. In addition to the AC line fuse, four separate B+ fuses are supplied. Electronic volt-amp limiting ensure safe operation of the output transistors, and an independent thermal cut-out for each output stage protects from high temperature. A large radiating area for the heat fins, which are attached to an aluminium back panel, and cooled with a thermostatically operated two speed fan, form a highly efficient heat sink. Speaker fuses protect the load. The Stereo 410 has been designed as two independent 200 watts (into 8 ohms) amplifying channels with a common power supply having a high degree of inherent regulation. In addition, where higher power is required, an extra cost circuit board assembly will be made available to permit monophonic (bridge) operation for 8 and 16 ohm loads. An accessory kit is also planned at additional cost for two output meters and meter switching, which includes an alternative front panel. Power output: 200 watts per channel into 8? Frequency response: 20Hz to 20kHz. Total harmonic distortion: 0.25%. Input sensitivity: 1.6V. Signal to noise ratio: 95dB. Speaker load impedance: 4? Semiconductors: 38 x transistors, 2 x zener diodes, 24 x diodes, 3 x thermal sensors. Dimensions: 17 x 14.5 x 7.25 inches. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “brickaudio77″ 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, 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, 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, Russian Federation.

• Model: Stereo 410
• Modified Item: No
• Country/Region of Manufacture: United States
• Custom Bundle: No
• Featured Refinements: Vintage Stereo Amplifier
• Type: Tube Amplifier
• Brand: Dynaco