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MissionAllegroSound has been dedicated to the
accurate recording and reproduction of
acoustic music for well over ¼ Century.
One can't please all people all the time;
for those who value knowledge
gained from hands-on experience,
AllegroSound is "hear" to assist you.
for AllegroBio 
Quid pro quoInfo presented here is extraordinarily labor-intensive;
if you have not purchased from us in the 36 years we've
been in business, your contribution commensurate
with value provided is very much appreciated.
Featuring* AllegroQC™ with 36+ yrs experience.
* Safe-packing. Trust your purchase to
one who knows & cares to pack it right.
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expense plus a $50 charge for inspection and testing.
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* all prices U.S. currency f.o.b. Los Angeles, California USA.
* prices without deposit subject to change without notice.
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Unobtanium Class
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FAQs
ConditionSome be 10~60 yrs old with imperfections,
including non-functioning indicator lights.
We do our best to describe known issues,
but, as one man's "good" is another's "poor",
symantics/condition cannot be guaranteed.
NO "mint", "minty", "perfect", "excellent", etc.
All pre-owned/used unless otherwise noted.
See Pics, MainsVoltage, Terms below.
PicsPics are shown for display purposes
& may not represent exact condition.
Text trumps pics - read description!
Mains Voltage & What To Do About It
220~240 Vac
Terms & ConditionsEquipment is carefully Inspected, Cleaned,
Variac'd, Tested for dc-offset & Auditioned
in ref system before it leaves our facility.
Quality work w/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,
typically within 30 days of cleared funds.
Suitability sole responsibility of Buyer.
Prices subject to change without notice.
All items subject to prior sale or no sale.
Not responsible for errors, typos, etc.
Symantics/condition not guaranteed.
All equipment as-is without warranty.
Add 9.75% Sales Tax within California.
All costs, including, but not limited to,
packing, freight, duty, taxes, fees, etc,
are sole responsibility of Buyer & not
refundable under any circumstances.
All sales final. References on request.
AMPLIFIERS: Solid-StateSolid-state amps with their inherent higher-damping are uniquely
suited to control the higher-mass of real woofers (10" & greater).
If you love tubes, bi-amp with tubes on top, solid-state on bottom.
switch on-the-fly between 80w/4 class-A and 300w/4 class-AB...
fabled Accuphase P-400 twin-mono amp,
2 monoblock amps on one chassis,
switchable on-the-fly between
50w/8 class-A or 200w/8 class-AB,
highly-efficient cooling system
eliminates the heat-damage typical
of other "class A" power amplifiers,
precision 1-db/step attenuators
eliminates the need for a preamp,
useful peak-&-hold power meters,
upgraded 5-way output connectors,
magical on electrostatic loudspeakers!
fyi, Accuphase stereo amplifiers typically
have a single pwr-supply for both channels;
the P-400 you see here be a rare exception,
with the benefits of separate monoblocks
in a cool-running compact design of the
finest quality and legendary reliability.
Accuphase P-400 twin-mono amp 
ATC SPA2-150 power amplifier,
twin-mono "audiophile" version,
2 monoblock amps on 1 chassis,
200w/ch into 8-Ohms, discrete,
XLR-Bal, wide-band, non-clipping,
on-board diagnostics w/display,
the best of British technology,
transparent and musical, 57#,
drives difficult loads w/ease,
outperforms Nagra MPA at
one-third the cost and heat.
(or, you could pay 5x more for new
darTZeel 108 with half the power)
ATC SPA2-150 twin-mono amp a Bigger-Bolder-Better Bedini 25/25...
fabled Bedini 100/100-DE c.1983,
#133DE, 100w/ch/8, 200w/ch/4,
19" rack-mount panel + handles.
(or, you could pay more for a Bedini 25/25 & get less).
matching 66DE preamp with MM Phono available.
Bedini 100/100-DE amp "one of most-enjoyable solid-state amps I've heard..."
Belles OCM-500 stereo amplifier,elegant 3-stage design w/mosfet out,
200w/ch/8, 400w/ch/4, 800w/mono/8.
SS in Stereophile: "...ideal amp for large
inefficient 'stats like Soundlab A1's...
this is one fast high-definition amp...
I was impressed by its ability to reveal
subtle aspecs of music...excellent bass-
extention, rivaling that of any amp I've
mated with the Dunlavy Signature VI's."
ST in Stereophile of smaller version:
"one of the most enjoyable solid-state
amps I've heard in nearly 18 years of
reviewing! It's solidly engineered,
beautifully built & reasonable priced.
I love the Belles for its warmth, richness,
and dimentionality - its musicality."
(or, you could pay 7x more for
a new pair of Belles MB-200's)
matching OCM-88 line-preamp andOCM-10 MM+MC phono-preamp avail.
Belles OCM-500 amplifier Seatbelts recommended for Home-Theater applications!
fabled Crown K1 stereo amplifier c.2003,
last Version!, big pwr/snd, small size/wt,
controls multiple large woofs in a vice-like
grip and drives difficult loads with ease,
legendary reliability & fail-safe protection
of the amplifier & your valuable speakers!
350w/ch/8, 550w/ch/4, 750w/ch/2, 32-lbs,
XLR-Bal in, Vol cont, rack-mt + handles.
(or, you could pay 8x more for a new
Spectron Musician III SE Mk2)
Crown K1 stereo power amplifier like no other...
fabled Denon POA-8000 "class A"
monoblocks, 200w/ch/8, 48 lbs,
ultra-stable Feed-Forward design,
input level control, subsonic filter,
run at reduced bias and lack the
heat-damage of all other POA-8k's,
simply magical on Manger MSW's.
(or, you could pay more for a pair
of Denon POA-S1 plus a forklift)
matching PRA-6000 preamp avail.
Denon POA-8000 monoblocks not for sale at this time.
fabled Kenwood L-09M monoblocks,
300w/ch/8, switched-attenuator,
power meter, AllegroMods™.
matching L-07C preamp available.
Kenwood L-09M monoblocks you can pay more, but you can't buy a better Krell.
fabled Krell KSA-150 dual-mono amp,
300w/ch/4, 600w/ch/2, 1200w/ch/1,
non-switching single-plateau bias,
XLR-Balanced in, 90 lbs, c.1990.
"The KSA-150 has to be one of the
smoothest, sweetest amps around...
bass is phenomenal." −ST/Stereophile.
(or, you could pay 17x more for
a new pair of Krell Evo-600's)
Krell KRX xover also available.
Krell KSA-150 dual-mono amp tube front-end, mosfet output...
Lector VM-200 hybrid amp,
100w/ch/8 and 150w/ch/4,
14GW8 Input+Driver tube,
mosfet output, low feedbk,
gloss-black side panels.
Lector VM-200 "brid" 
LUXMAN M-4000 twin-mono amp
fabled Tim de Paravicini design,
best of 2000-4000-6000 Series
(larger M-6000 & single-ps M2000
& mosfet M4000A are less good),
precision 1db/step attenuators
eliminates need for a preamp,
average & peak power-meters,
180w/ch/8, c.1976, number 1393,
much point-to-point hard-wiring.
fyi, M-4000 has bipolar current stage;
M-4000A has mosfet current stage;
bipolars trump mosfets re current.
matching T-110 tuna available.
LUXMAN M-4000 amplifier a Ken Ishiwata design. the legacy continues...
Marantz MusicLink MA-24 monoblks
(formerly Marantz Esotec series),
rated 30w Class A, copper chassis,
6"h - 8"w - 14"d, champagne-gold.
matching SC-22 preamp available.
Marantz MA-24 monoblocks McIntosh, since 1949, like no other...
fabled McIntosh MC-2600 dual-mono amp,
latest and greatest of the professional
"Big Macs" with XLR-Balanced inputs
and even more McPower to outperform
its illustrious predecessors (2300/2500),
600w/ch, 2200w/100A/pk/ch in stereo!,
4400w/200A/pk/mono!, 2-4-8 Ω taps,
drives any load incl 0.1 Ω ribbons!,
improved fan-management system
unlikely to activate the variable-speed
fans under typical domestic conditions.
Legendary musicality, reliability and
fail-safe protection for your speakers.
Rack-mountable. ST in Stereophile:
"Once you've experienced and lived with a mega-amplifier,
whether tubed or solid-state, it's difficult to return to one
of moderate power - and by moderate I mean even a few
hundred wpc - especially if your goal is to reproduce without
strain the dynamic range of live orchestral performances..."
(or, you could pay 8x more for Boulder 2060)
click for McIntosh MC-2600 dual-mono amp legendary musicality, reliability & fail-safe spkr protection.
fabled McIntosh MC-2120 amp,
unique autoformer design,
120w/ch/stereo, 240w/mono,
2-4-8-16 Ohm taps, Volume,
drives any load including 0.1
Ohm ribbons! 1 of Mac's best.
(or, you could pay 5x more
for a new Moscode 401HR)
click for McIntosh MC-2120 
Mitsubishi Diatone DA-A15DC amp,
150w/ch/8, latest and best version,
2 mono amps on one solid chassis,
variable input sensitivity each ch.
Optional DA-M10 meter unit below
matches optional DA-F20 tuner.
Mitsubishi DA-A15DC amp docks with DA-A15DC amplifier above.
fabled Mitsubishi Diatone DA-M10,
essentially a unity-gain preamplifier
with 2 large peak-responding Meters,
docks with DA-A10 and DA-A15 amps
or used free-standing with other amps,
convenient Front-panel Volume controls,
RCA in/out, matches beautiful DA-F20 tnr.
Mitsubishi DA-M10 Metered Controller selectable Low-Pass & High-Pass filters facilitate bi-amping.
fabled NEC M-50 monoblock amps,
100w/4, 240w/pk/2, 57A/pk, 5~300kHz,
unique selectable Lo-Pass & Hi-Pass
filters facilitate bi-amping & protect
your delicate drivers from damage,
Volume contol, fluorescent meters.
NEC M-50 monoblock amps "M stands for Magic."
fabled Onkyo M-510 twin-mono amp,
#40 of 43 produced for U.S. market,
2 monoblock amps on one chassis,
Champagne-gold with lacquered
persimmonwood matches M-588,
300w/ch/8, 500w/ch/4, 2Kw/pk/ch/1,
140 lbs of magical music replay.
Onkyo M-510 twin-mono amp "M stands for Magic."
fabled Onkyo M-588 twin-mono amplifier,
two monoblock amps on one chassis,
c.1993, essentially a smaller M-510 with
Balanced inputs, Champagne-gold with
lacquered persimmonwood matches 510,
200w/ch/8, 750w/pk/2, AllegroMods™.
Mate with Sansui C-2301 preamp
for a Magical music experience.
Onkyo M-588 twin-mono amp "perfect balance of detail & musicality with holographic soundstage"
fabled Pioneer Series20 M-22 amplifier,
2 monoblock amps on one cast-chassis,
AllegroMods™ eliminate heat-damage,
improve sound and deliver more power.
PB in TAS: "My fave 25W class A amp is the
Pioneer M-22. It offers a perfect balance of
detail & musicality with a truly holographic
soundstage. I like it better than M-03, DR-2,
DR-3 & Bedini for driving my classic Bozaks."
And this one-of-a-kind M-22 with extensive
AllegroMods™ is way better in every way;
more texture, more body, more musical...
* this is NOT your grandpa's stock M22!
Pioneer Series20 M-22 twin-mono amp 
QUAD 606 amp #27093 c.1997,
last Version plus AllegroMods™,
130w/ch/8-Ohms, 220w/ch/4-Ohms,
stable into any load with any signal,
outperforms 909 and others driving
Quad ESL-63-988-989-2805-2905.
QUAD 606 stereo amplifier a Masaru Nagami design. sweeet!
fabled SONY ESPRIT TA-N900 monoblks,
analog "class A" w/pulse-locked pwr sup,
200w/2~8 Ohms. Rosewood cabs avail.
matching SE-P900 parametric available.
SONY ESPRIT TA-N900 monoblocks 
SONY TA-N77ES amp c.2002,
200w/ch/8, 800w/pk/2, meters,
Direct + Variable inputs, 58#.
SONY TA-N77ES amp 
SONY TA-1010 integrated amp
c.1970, 2 MM phono, 15w/ch/8.
SONY TA-1010 amplifier not for sale at this time.
SONY TA-3200F amplifier c.1971.
SONY TA-3200F amplifier small size, BIG sound !
Unison Research SR-1
hybrid integrated amp,
80w/ch/8, 5 line inputs,
upgraded 12AU7 tubes,
mosfet output, remote vol,
outperforms the usual suspect.
(or, you could pay 2x more for a
new Pathos C1 or Ayre AX-7e)
Unison SR-1 amp+pre original UREI...
vintage UREI 6150 2-ch amp c.1982,
80w/ch/8, XLR-Balanced inputs,
Headphone jack, Volume controls,
upgraded pwr cord, rack-mount.
UREI 6150 stereo amplifier 
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Los Angeles, California USA
Rick@AllegroSound.com
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