Original Reference TubesTm
"The finest tube gear in the world
cannot transcend the limitations
of an inferior tube."
fabled New-Old-Stock
AllegroSound
12AU7BTm
DIY UPGRADE for all
12AU7 - 12AU7A - E82CC - ECC82 -
ECC802 - ECC802S - 6N1P - and others.
Precision - Tested / Selected / Matched
in Tektronix 570 Curve-Tracer
and Hickok 1234 CardMatic.
The easiest, most cost-effective DIY UPGRADE
you can make in your recording or replay system!
No hype, just better sound, or $-back on tubes!
Imitations abound! Trust your recording/reply to the one who's been offering a superior product for over a quarter Century and who cares as much about your sound as you.
100-day AllegroExchange
1-Year pro-rated AllegroWarranty
US$190/ea, SALE US$90/ea.
SPECIAL OFFER
Test-drive AllegroSound 12AU7BTm
in your system. If you don't hear
a vast improvement well-worth
the cost, your $ back on the tubes!
send USPS Money Order.
add $20 p/s/h per order.
add 9.75% S.Tx in CA.
for instructions.FOREIGN Orders
for instructions.
AllegroSound
− Established 1973 −
"love what you listen with"
Los Angeles, California USA
Rick@AllegroSound.com
more information 
AllegroSound 12AX7BTm
FOR SALE - TRADE
HOME / Master-Index12AU7B™ and 12AX7B™ are Trademarks c.1978 of
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