AllegroSound
Original Microphone Tubes™
"The finest tube mic in the world
cannot transcend the limitations
of an inferior tube."
DESCRIPTION
Genuine, New-Old-Stock, Made-in-USA, 6072 c.1950~1978 tubes precision Tested-Selected-Graded for use in New and Vintage microphones and mic-pre's.
also:
* 5840M™
for Telefunken AK-47, Royer, Peluso
* 6072M™
for AKG C12, C12VR, TheTube, C24, Telefunken, Manley, Peluso, Rode, Soundelux, Cameron Labs, ADK...
* 6111M™
for Neumann M147, M149, M150, Korby CM3...
* 6112M™
for InnerTubeAudio 451...
* 6205M™
for GrooveTubes...
* 6267M™
for Neumann U67...
* 6922M™
for Audio Technica AT-4060, InnerTubeAudio MM-2000, Lawson L47, L251...
* 7586M™
for AKG C12A, C61, Neumann U64...
* 6AU6M™
for Sony C37, C-800, C-800G, Telefunken CM61, Altec 21...
* 12AX7M™
for AKG Solid-Tube, Manley, SE Z5600, ICIS, Gemini, CAD...
* 12AU7M™
for CAD...
* 13CW4M™
Nuvistor for converted U47, U48...
* AC701M™
for AKG, Neumann, Schoeps...
* EC92M™
for Neumann M582, Gefell UM57, Telefunken...
* EF732M™
for Telefunken AK47...
* VF14
for Neumann U47, U48, Church Cine...
* EF804S, 806S, E180F, 12AX7B
for mic-pres, limiters, compressors, reverbs, eq's, etc...
* If we missed your application, worry not;
AllegroSound has the best tube
for all of your audio applications.
PURPOSE

Lower noise with greater detail, transparency and reliability. Sound is further improved as NO (or less) EQ is needed with a fresh tube.
BACKGROUND

AllegroSound pioneered the "Reference Tube" industry in 1978 with the introduction of the legendary
AllegroSound
12AX7B™ Original Reference Tube, the finest 12AX7 - 12AX7A - ECC83 - E83CC - ECC803 - 5751 - 6057 - 6681 - 7025 - 7058 - 7729 tube ever made,
with the finest guaranty ever made, "better sound or your $ back".
In 1987, AKG (Austria & CT USA) selected the AllegroSound
6072M™ for TheTube (the first and best re-issue of C12) production and for replacement in vintage C12, C24, ELAM 250 & ELAM 251 microphones and has earned it's place as the standard of the recording industry.
* BUYER BEWARE! Sub-standard material and imitations abound, even from the manufacturer of your prestigious microphone!
Tubes without
AllegroSound logo are NOT the same quality.
Trust your precious recordings to one who's been offering a superior product for over a quarter Century
and who cares about your recordings as much as you.
TESTING

AllegroSound 6072's are selected from New-Old-Stock Made-in-USA material c.1950~1978 in Tektronix 570 curve-tracer, Hickok 1234 CardMatic and AKG C12VR.
NOTE: Not a single GE 6072 manufactured in the 1980's, or RCA "6072" of any vintage,
has ever met the grade of AllegroSound 6072LN™.
GRADING
|
6072LNTM |
Low-Noise, High-Quality, American-made, NOS, genuine 6072, outperforms tubes from other sources.
| $ 98 |
6072MTM |
Standard Of The Industry since 1987, meets AKG's original specs, 2-5 db less noise than LN and 10 db less than non-Allegro tubes. |
$ 175 |
6072M+TM |
Lower noise, covers 90% of recording applications, most-popular. |
$ 250 |
6072M/PRTM |
Private Reserve, as M+ with lower noise plus listening evaluation. |
$ 350 |
6072M/PR+TM |
Audiophile-grade, as PR with still lower noise. |
$ 450 |
6072M/BTi TM |
Best There Is, when compromise is not an option!
Only one tube out of a Thousand of the best vintage material meets this grade!!! | $ 999 |
OPTIONS
|
MS |
curve-traced-Matched-Sections for C24, Manley Gold & other Coincident-Stereo mics. |
add $40 |
MP |
curve-traced-Matched-Pairs for 2-mic Stereo. |
add $60/pr |
GUARANTY

AllegroSound Original Reference Tubes™
are guaranteed to improve your
recording and replay system
or money back on the tubes.
flying-lead types not installed by AS & F-types not applicable.
WARRANTY

100-day AllegroExchange™
300-day pro-rated AllegroWarranty™
flying-lead types not installed by AS & F-types not applicable.
CONSIDERATIONS

You need a BACKUP tube for each tube mic.
Tubes wear out, it's the nature of the beast, and session time costs more than tubes.
If a tube goes south in the middle of a recording session, you're dust without a backup tube.
And if you wait for the tube to get noisy before replacing it, you have not been recording at top performance!
As tubes age, they loose more and more detail and require more and more EQ (you can't get back what you've lost, and more EQ makes it worse).
The tube should be retired long before it gets noisy, or worse, fails, when it can damage other components in the mic.
If you swap in the backup tube every month or two for a vocal or piano test, your ears will tell you when NOT to put the old tube back in.
If you don't have the time to do this, replace the tube within 12 months if in daily use.
AllegroTipTM
- Running the mic with capsule end UP
will lower noise & extend the life of the tube & capsule.

Your recordings will sound better and your music enjoyed more with
AllegroSound
6072M™
Original Microphone Tubes™
available ONLY from AllegroSound.
What's in YOUR microphone?
Clients include
Customer feedback
" Hey there Rick: The AllegroSound 6072M+ tube sounds awsome. Very quiet and smooth, but with a clear open sound.
I am very pleased with the results I had when recording a male vocalist which sometimes can be a little murky in the bottom end when recording with a tube mic.
The result was a clear, warm sound. And thanks once again for all the great knowledge you shared with me that will help me to keep better tube health around the studio.
Why the big, elite, microphone companys don't use great tubes like this is beyond me. They could have such a better product with the noticeable difference your tubes make! "
Scott Sawyer, Outback Studio, Powder Springs, GA - 2004
SPECIAL OFFER
Test-drive
AllegroSound
6072M+™
in YOUR microphone. If you don't
hear less noise + better sound,
your money back on the tube!
PayPal accepted.
Instructions on request.
U.S. Postal Money Order
from your local U.S. Post Office
and payable to Allegro Sound.
Other methods of payment acceptable,
but shipping will be delayed.
add $22 p/s/h/i per order +
applicable SalesTax in CA.
RUSH Order

Orders called in before NOON PT
& paid via PayPal Balance can be shipped
NEXT DAY for delivery on following biz day.
Call for this extra-cost service.
FOREIGN Orders

for instructions.
AllegroSound
− Established 1973 −
"love what you listen with"
Los Angeles, California USA
Rick@AllegroSound.com
Microphone Repair Services™
Preamp & Effects TUBES
PROaudio Rentals & Sales
http://www.6072M.com
http://www.6072M.net
6072M ,
6111M ,
6205M ,
6267M ,
6922M ,
7586M ,
5840M ,
6AU6M ,
12AX7B ,
12AX7M ,
12AU7B ,
12AU7M ,
13CW4M ,
AC701M ,
EC92M ,
EF732M
are Trademarks c.1978 of AllegroSound , Los Angeles California USA. All rights reserved.
- tube animation by Max Robinson -
AllegroSound et al assumes no responsibility for use or misuse of products, services, info, etc.
design & original content ©AllegroSound, los angeles, california, usa. all rights reserved.
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