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Reviews (27)
23 May 2017
RCA 6L6 beam power metal tubes and it's 6L6Y and 1614 kin
RCA was the inventor who patented the original ST-bottle 6L6G and these metal 6L6 tubes still have that original, unique, touchable RCA shimmery/chimey tone with pleasingly broad and oh-so-musical dynamics with that airy RCA sparkle on top. Not surprisingly, they are equally at home teasing-out vocal detail in an early hi-fi rig, string and reed nuance in an instrument amp, clean satisfying tones driven by humbuckers and 'hot' pick-up alike, or delivering those wonderful harp harmonics through a Shure green-bullet mic. They are understandably prized by many jazz guitarists for their wonderful bell-like tones with a magical clarity on top, traditional RCA warmth in the mids and a fabulously solid bottom-end. And they never seem to get tiring even after hours of recorded listening whether sourced from vinyl or a suitable tube-driven DAC.
These metal 6L6's rock-steady signal stability is also one reason Hickok, who dominated the vacuum tube tester/analyzer industry for decades, chose them as its standard calibration tube for virtually every model they made.
The military 6L6Y and commercial 1614 are more potent metal versions of the vanilla metal 6L6 design and were the work horses often specified in 1950-1960s high-quality hi-fi amps and various military gear. They sound similar to and can substitute for the vanilla 6L6 metal in any of it's native applications. They can also sub for 6L6G/GA/GB ST-bottle variants in many applications as well as 5932s in some applications (be sure to check with your tech first as pin-1 is connected to the metal jacket!), but, in general, the 6L6Y or 1614 CANNOT sub for 6L6GCs, 5881s, KT66 or 7027s without equipment modification yielding a reduction of power output.
Whether military, civilian or commercially labelled and whether wearing the RCA brand, an OEM brand or occasionally various application-specific branding, these pre-WWII through late 1950s RCA-made metal 6L6s and their 1950s-1960s more potent 6L6Y and 1614 kin all have that magical RCA sound inside and they are tough, long-lasting and very stable tubes when operated within specifications.
Check the vertical lip just below the seal-ring and just above the pin button for RCA's 2-digit metal tube code (letter-number or number-letter) stamped in the metal. Whether the can is labelled RCA or for others, that code will always appear there if it's an RCA-made metal 6L6.
If your amp keeps plate voltage within their specs you may just be charmed by the fluidity and dynamics of these old metal marvels. As a bonus, their metal jackets help them deliver quiet listening free of ambient electromagnetic interference.
Try some RCA metal-can 6L6s in any amp calling for a 6L6 or 6L6G and you just may fall in love with their dynamics and tone -- straight from the golden age of vacuum tubes.
02 March 2021
Nice Fresh CR2032 coin cells.
Nice Fresh CR2032 coin cells.
25 April 2018
Genuine SHARK Rocket part
This item is identical to the original SHARK Rocket 327FFJ452 part that is called "ALL SURFACE" in the original operator manual. It is now called "DEEP CLEANING" and is labelled as such on the beater-bar itself, but is the same identical part and part number. If you go to the SHARK website you will see it is the same part number, only the name has changed (I'm guessing that for marketing purposes Deep Cleaning is more attractive than All Surface). Excellent value too.