AllegroSound


Buy < Sell > Trade

Rick@AllegroSound.com



"love what you listen with"

            allegrosound dot com         ♥ AMPS Tube ♥


This page is updated DAILY & is optimized for view-
ing on a LARGE screen with screen-pointer; devices
without screen-pointer will have limited functionality

(you may not be able to view image-info and prices);
bookmark this page for later viewing on computer.
  • recommended browser:  Firefox / Palemoon.
  • if you have only IE, select "Compatibility View".

* iPhone - iPad - iPod with iOS7 or later ver iOS:
  place finger on image & hold until text shows in
  lower part of iScreen; click here for iScreenshot.

If you arrived here via Search Engine or via Toolbar,
you may be on old page; click here for Current page.

* To hide MENU, Click "Hide<MENU>Show"
    above the MENU; Click again to Show.

* Items in RED are internal links; Click for more info;
    be patient, as some are large & need time to load.

* IMAGES be INFORMATIONAL via pop-up TEXT.
    Place screen-pointer over the image - do not click!
    info will show in 2 secs; if not, Click "help" below.

* NO web-bugs/trackers on this site.
* NO cookies baked on this site.
* NO Java brewed on this site.
* NO info gathered on this site.
* NO flash running on this site.
* NO login required on this site.
* NO off-site linkage on this site.
* NO malware/scareware/houseware.
* NO email addy's sold-traded-shared.

* Allow Scripts in your Browser.

  • if menu does not follow as u scroll, u have scripts disabled!
  • to resize, rotate scroll-wheel while holding down Ctrl-key.
  • recommended browser:  Palemoon or Firefox.
  • if you have only IE, select "Compatibility View".

* K = 1000.     PR = pair.     PTC = partial trades considered.


 allegrosound dot com 



 Mission
AllegroSound has been dedicated to
accurate recording and reproduction of
acoustic music for well over ¼ Century.
For those who value ears-on experience,
AllegroSound is "hear" to assist you.

Trades welcome!  allegrosound dot com AllegroBio 



 Featuring
* AllegroQC with 40 yrs experience.
* Safe-Packing. Trust your purchase
to one who knows & cares to pack it
so you receive it in same condition.
* Ci with HTS# provided on foreign
shipments reduces unnecessary
delay and damage in Customs.

World-Wide Shipping



Condition
Some be 10~60 yrs old with imperfections,
non-functioning lamps, old capacitors, etc;
NO "mint", "minty", "perfect", "excellent".
All pre-owned/used unless otherwise ntd.

AllegroGrade on scale of 1~7:
  7 = New-In-Sealed-Box.
  6 = New-In-Open-Box.
  5 = Demo-In-Open-Box.
  4 = VeryGood. 3 = Good. 2 = Fair. 1 = Poor.
See Pics, MainsVoltage, Terms below and
Frequently Asked Questions
(FAQ in Menu).




Pics
Pics are shown for display purposes
& may not represent exact condition;
text trumps pics - read description
and email if you need clarification.




allegrosound dot com  Mains Voltage & What To Do About It
allegrosound dot com  220~240 Vac 



Price$
From computer, place your screen-pointer
over the spinning gold disc in each listing,
do not click!  Price will show in 1~2 secs;
if not, Click "HELP" in the floating Menu.

* prices NET-USD f.o.b. Los Angeles, California, USA.
* k = US$1,000.   ptc = partial trades considered.
* tbd = to be determined.   mp = matched pair.
* prices w/o deposit subject to change w/o notice.
*
AllegroLayAway with 20~30% down.
*
AllegroTradeUP with your approved trade-in.
*
AllegroBuyBack on selected items (see FAQ).



 Trade-ins
AllegroSound trade-ins/purchases are not
final until received, inspected, tested and
approved by AllegroSound. Items failing to
meet represented condition will be returned
at Customer's expense plus $90/hr labor for
unpacking/inspection/testing/repacking;
additional fees may apply.




 Vacuum Tubes
All tubes sold by AllegroSound have been
carefully tested on the finest equipment
and, therefore, are technically "used".
* most plug-in tubes carry our exclusive
100-day exchange/1-yr pro-rated warranty.




  Terms & Conditions
Equipment is carefully inspected, cleaned,
variac'd, tested for dc-offset & auditioned
in ref system before it leaves our facility.
Quality work with TLC takes quality time;
I work at my pace & have orders ahead
of yours; item will ship when testing is
completed and packed for safe transit.
Suitability sole responsibility of Buyer.
Not responsible for errors/semantics/etc.
All items subject to prior sale or no sale.
Prices subject to change without notice.
All equipment as-is without warranty.
All sales f.o.b. Los Angeles California;
all matters & costs beyond this point,
including, but not limited to, packing,
freight, ins, taxes, fees, duty, are sole
responsibility of Buyer. All sales final.
L.A.C. Sales Tax applies in California.



      allegrosound dot com     allegrosound dot com allegrosound dot com           



Why upgrade?
When your system doesn't sound good, u don't feel good;
when you don't feel good, your work is not good;
when your work is not good, your marriage is not good;
when your marriage is not good, you get divorced;
when you get divorced, you loose your system.

Upgrade today at AllegroSound.com



 AMPLIFIERS: Tube + Hybrid
Seems like all solid-state amps these days are advertised "tube-like".
And cd's are "Perfect sound forever"... & the spin goes on and on...
The reality is, if you want the sound of tubes, you need tubes.
* Taps matter! spkr's minimum-Z should not dip lower than the tap
driving it; modern tube amps should have 2-Ohm taps to drive
modern spkrs which typically dip below 4-Ohms; one of few to get
this (and other things) right was Mark Levinson Red Rose Music.
* Never operate a tube amp without a load (speaker or resistor).




SET, 2-channels, small size, BIG sound...
   
hail the Audio Note Conqueror
Single-Ended Triode stereo amp
c.1997, late Version, low hours,
2-6SN7, 2-300B, 5U4, 8+4 Ω taps,
fresh and matched EH/JJ 300B's.

AllegroBuyBack  
(or, you could pay 5x more for a
Shindo Cortese without 4Ω taps)
* fyi, if your spkrs dip below 8Ω
(most do) you need 4 Ohm taps!

allegrosound dot com  Audio Note Conqueror SET 



E.A.R. Yoshino 869.             a Tim de Paravicini design.
 
Esoteric Audio Research / E.A.R. / Yoshino
869 Enhanced Triode Mode Single-Ended
integrated, 15w/ch 4-8-16Ω, 5+Direct ins,
pre+tape out,
AllegroMods + full comp
of primo NOS German and USA bottles.
Simply magical on Quad ESL-57 stats!

* update of fabled 859 w/added Amp-Direct
& even better output transformers. Sweeet!
 
allegrosound dot com  E.A.R. Yoshino 869 integrated amp 



former engineer for Saul Marantz builds a better amp...
  allegrosound dot com   
fabled Hadley Labs 601
stereo tube amp c.1963,
#61 of only 90 produced,
outperforms Marantz 2-5-8-9,
high-nickel wide-bandwidth
xfmrs, all-original including
Hadley-branded Telefunken,
simply magical on Quad-57
& Infinity ServoStatic 1's.
 
allegrosound dot com Hadley 601 tube amp 



Peerless nickel trannies, Hovland caps, plug-n-play
   
fabled Heathkit W5M ultra-wide bandwidth
(±1db from 5Hz way out to 160kHz at 1W!)
vacuum-tube monos, classic Williamson
circuit with early superior Peerless 16309
nickel-core transformer driven by pair of
peerless KT66-6L6-5881-7027-7581 tubes
(a la McIntosh MC-30 and Red Rose M1),
tube/choke ps, 5R4GY, 2-12AU7, 2-KT66,
serviced and upgraded by Bob Hovland.
Heathkit's best version of it's best amp
(not as rare as W6A, but 6L6, tube/choke
ps & hi-nick trannies in W5M be superior).

matching WA-P2 preamps available.
 
allegrosound dot com  Heathkit W-5M W5M monoblocks 



have it both ways: tubes for voltage, mosfets for current

Lector VM-200 hybrid amp,
100w/ch/8 and 150w/ch/4,
14GW8 Input+Driver tube,
mosfet output, low feedbk,
gloss-black side panels.

AllegroBuyBack  
(or, you could pay 12x more for new
Lamm M2.2 hybrid mosfet monoblks)

allegrosound dot com Lector VM-200 VM200 "brid" 



"involving..musical..transparent..liquid..neutral..imense soundspace"  
Legend Audio LM-Triode monoblocks,
designed & manufactured in California
USA with TLC by Von Gaylord Audio,
2 triode-connected KT88-KT90-6550
delivers 40 sweet Watts into 4-8-16 Ω,
2-12AX7 input/drvr, 5AR4-GZ34 rectifier,
auto-bias, oil-filled caps, 40#, low hrs,
hard-wired, mirror-imaged matched-pr.

AllegroBuyBack  
(or, you could pay 3x for Nirvana 4's or 33x for Uni-Sea's)
"...this is the most involving & musical amplifier of this genre...
imense soundspace & captures the full recorded acoustic from
a warm but natural perspective...Downsides? They'll take time
away from other activities because you will be belted into your
listening chair for far longer sessions.
" —PB/TAV.
"...beautiful transparency, ravishing liquidity, very clean sound
and excellent neutrality...wonderfully musical...IAR Best Buy.
"

allegrosound dot com  Legend Audio LM-Triode amps 



Switch on-the-fly between SE or PP to match music/spkrs
allegrosound dot com 
fabled David Manley SE/PP-300B
monoblock amplifiers c.1995,
switch on-the-fly between 18w
Single-Ended & 36w Push-Pull
(switch from SEP for Shirley Horn
to PP for Mahler and Pink Floyd ),
0~10db feedback in 1db discrete steps
for precise matching to your speakers,
fresh matched JJ/Tesla Slovak 300B's,
120-240vac, only 11.5"w - 10"d - 6"h.

AllegroBuyBack  
(or, you could pay 2x more for larger/heavier Manley Neos)
(btw, EveAnna prefers this orig DM ver to her later Retro)
ST in Stereophile: "SE/PP-300Bs have almost as much
delicatessen & detail as the Jadis SE300Bs, & they have
balls in the bass too, even in SE mode with no feedback...
comes very, very close to the sound of costlier amps such
as Wavelength Cardinal & Jadis 300B...I'm going to have
trouble sending these back.
"  Stereophile Class A-rated.

allegrosound dot com  Manley SE/PP-300B monoblocks 



since 1949, like no other...
 
McIntosh MC-30 Type A-116-B c.1949,
30w/4-8-16 Ohm taps, matched-pair,
Chassis # 08003 and # 08004,
Serial # 7E690 and # 7E692,
all original except the tubes,
6L6-1614-5881-KT66 beam-tube
delivers superior sound quality
(6L6 be superior to 6550, EL34, etc),
5U4-rectified for superior reliability,
Volume controls to bypass preamp
or match other amp in bi-amp setup,
Mac's all-time-best tube amplifier.
 
allegrosound dot com  McIntosh MC-30 monoblocks   



a Mile Nestorovic design based on his original MC-3500/MI-350 for McIntosh Labs

fabled Nestorovic Labs tube amps c.1985,
your choice of matched-prs w/fresh tubes:
* Nestorovic Alpha-1 monos #122 / #123,
* Nestorovic NA-1 monoblks #136 / #137,
Balanced update of Mile's legendary
design for Mcintosh (MC-3500, MI-350)
producing 150 Watts from inexpensive pr
of 6KD6 beam-tubes, Balanced and SE in,
8+4Ω Balanced Out, switchable Feedback,
very exclusive, less than 100 pairs made.
visually-physically-electrically balanced!

(or, you could pay 3x more for non-bal MC-3500)
♥ Stereophile 9/91: "...the lyrical elements of
the music flowed so naturally, amost song-like...
realistic image size...excellent dynamics.
"
♥ TAS 3/83: "...all things considered, the more
power in a good tube design, the more concert-
hall realism at any given playback level
."

Nestorovic Labs Alpha-1 tube amps 
allegrosound dot com Nestorovic Labs NA-1 tube amps 



Mark Levinson loves music so much, he built a monument to it

Mark Levinson Red Rose Music allegrosound dot com 
Model One Reference Monoblocks,
conceived, designed & manufactured
with excellence entirely in the USA
(no, Martha, these were not made in
China like the solid-state models!),
#04 & #05 c.1998 with updates,
170w Ultra-Linear or 65w Triode,
2-4-6-8Ω taps (high-current 2Ω tap
enable this amp to drive speakers
other tube amps can only dream of),
4-6SN7, 8-6L6/5881, (1-5842/417A),
on-brd mtr, all-Balanced signal path
with NO phase-converter to alter
the acoustic of the recording venue!
(RCA-in adds 5842 phase-converter
for Single-Ended source, if you must),
100-120-240V World Power Supply,
Auto-Standby, factory crates, low hrs,
ultra exclusive (< 200 pairs produced,
few in special Champagne-Gold finish),
outperforms all SETs & everything else!
(or, you could pay 7x more for a new pr
of Lamm ML-3's with 1/5th the power)
♦ To paraphrase Dr. Strangelove,
    "The whole point of a simple circuit
      is lost if you make it expensive.
"
♣ In the immortal words of Joe E. Brown,
    "Well, nothing's perfect."
♥ In the opinion of AllegroSound,
    "These come close; very close."
 
  CLICK for Red Rose Reference 



SETing the bar higher...
   
Wavelength Signature Series
Duetto v2.1 SET 2-ch c.2000
framed in maple, all options,
8w/ch, 2-6SL7, 2-300B, 5AR4,
switchable 4Ω - 8Ω taps,
fresh matched EH/JJ 300B's.

AllegroBuyBack  
(or, you could pay 3x more for a new Airtight ATM-300).
"a legitimately high-end piece of gear so superior to its peers
I would never part with it for any reason.
—Ian White, ETM

allegrosound dot com  Wavelength Duetto v2.1 SET 



better construction equals better sound.
  allegrosound dot com   
fabled VAIC VV30B Type-1 Matched-Quad,
direct 300B swap in amps that can supply
higher filament current for this super-tube,
excellent in VAC Renaissance, Welborne,
AudioNote, Wavelength
and others.
 
JC/Stereophile: "My fave 300B by a wide margin is the
beautifully-crafted VAICVV30B Type 1...these refined
& elegant tubes are fabricated by hand in the old Tesla
Reserch Labs in Czech Republic...a plug'n'play 300B =
"
* also a fave of Wavelength's Gordon Rankin.

allegrosound dot com  Vaic VV-30B VV30B triode tubes 



seldom equaled, rarely surpassed...
 allegrosound dot com   
Western Electric 300B.
"combined everything good that can be found in other
300B's; it had the KR's authority, but was devoid of any
obtrusiveness; bass was deep, but in total balance with
rest of the spectrum, and was controlled & easy-flowing;
it bettered all other tubes in air, space, width, and depth;
very involving too...if you want the best, there's only the
Western Electric.
" —PvW, Stereophile.

allegrosound dot com  WE300B tubes 




AllegroSound
−  Established 1973  −
"love what you listen with"
Los Angeles, California USA
Rick@AllegroSound.com
CONTACT AllegroSound               


allegrosound home-page master-index  HOME / Master-Index 



       



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.
< menu on/off >

      ♥ MENU ♥

* Amps Tube
* Amps Solid-State
* Digital
* Crossovers
* Audio Palettes
* Phono
* Preamps
* MC Step-UPs
* Speakers
* Reel Tape-Decks
* Tuners
* Test Gear
* Miscellaneous
* New Arrivals
* Featured-System

> PROaudio

> Tubes

> Cables

> Manuals

> WANTED

> Consulting

> KnowledgeBase

> NoCashAudio

? FAQ&A 

♥ HELP ♥