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Classic No.16.6 6550/KT88 tube ... - China-hifi-Audio

    https://www.china-hifi-audio.com/en/yushang-audio-classic-integrated-amplifier-c-33/classic-no-16-6-6550-kt88-tube-integrated-amplifier-with-remote-p-321
    6550A/KT88 consisting of convertible ultra-linear amplification with the working condition of the power transistor amplifier stage. Fixed gate bias mode. It is particularly worth mentioning that the machine used by the output transformer.

6550 Vacuum Tubes - Tubes for Amps

    https://www.tubesforamps.com/products/6550
    6550 Tung-Sol introduced the classic pear-shaped 6550 tube in the mid-1950s. Tung-Sol developed 6550 as a highly linear power tube. The 6550 tube was quickly adopted by the growing American audio market entering the golden era of the Tube HiFi Audio. Other US manufacturers such as GE and Sylvania produced 6550 tubes, but with a straight bottle.

Audio Classics - New and Used Stereo Equipment For Sale ...

    https://www.audioclassics.com/
    JBL L100-CLASSIC Classic Century Speaker BS*2999.00 : Legacy AERIS 6 Driver, 4.5 way dipole mids 500 watt Icepower NEW-LA210426AEBP1A*22999.00 : JBL PARAGON Wanted! Classic Mid-Century Modern Speaker 19999.00*EA

Audio Research D-70 Vacuum Tube Power Amplifier - …

    https://www.ebay.com/itm/334202101816
    Audio Research D-70 Vacuum Tube Power Amplifier - 6550 - Classic Audiophile | eBay Here is an Audio Research D-70 vacuum tube amplifier. It is being SOLD AS-IS. The unit blow its line fuse as soon as powering it on. All of the 6550 tubes test good. History:Single Loving Audiophile Owner / Non Smoker. Skip to main content Shop by category

Audiogon Discussion Forum

    https://forum.audiogon.com/discussions/best-modern-6550-tube-for-arc-per-amp
    you do realize that the audio research ref 6 linestage uses its single 6550 tube as a voltage regulator in the power supply section, feeding the 4x 6h30p controlled gain section, right? this has been the case since the ref 2a model... where the power supply/regulation circuit incorporated a single 6550

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