Audio ResearchReference 750usedAudio Research Reference 750 Mono Block Amplifiers. Mint Store DemosSunny Components Inc,Tue, Wed, Thur, Fri 10.00am-6.00pm.Sat-10am-4pm Closed on Sunday and Monday.1370 E Cypress St Ste D,E Covina CA-91724 USATel: 626-966-6259. Fax: 626-966-5467. Cell: 626-975-135...16995.00

Audio Research Reference 750 Mono Block Amplifiers. Mint Store Demos

Listing ID: lis9c0bg Classified 
 Listed  · 736 Views
Time Left:16 Days
New Retail Price: $55,000.00


Buy It Now
Payment methodsPaypal card

Contact seller after sale to pay viaVISA/Mastercard, American Express, Certified check, Personal check or Wire Transfer

Ships fromCovina, CA, 91724
Ships toWorldwide
Package dimensions48.0" × 48.0" × 30.0" (200.0 lbs.)
48.0" × 48.0" × 30.0" (200.0 lbs.)
Shipping carrierUPS
Shipping costSpecified after purchase
Original accessoriesBox, Manual
Agon miniAverageResearch Pricing

Sunny Components Inc,
Tue, Wed, Thur, Fri 10.00am-6.00pm.Sat-10am-4pm Closed on Sunday and Monday.

1370 E Cypress St Ste D,E Covina CA-91724 USA
Tel: 626-966-6259. Fax: 626-966-5467. Cell: 626-975-1353.
Store website:

Some of the finest products built in America & Europe, combined with the 
finest service and know how and expert setup from Electrical power to 
the finest Audio stands, electronics speakers turntables and streaming. 
We stock, install and configure Roon and MQA.

Audio Research Reference 750 1 pair Mono Block Amplifiers.

1 pair of Amplifiers for sale.

Add Vandersteen Audio Model 7 Series 2 speakers with upgraded plinth. Retail 75000 Total package $90,000 total Or add Vivid Audio Spirit 1 speakers.

Super Deal at $14995.00 when purchased with new speakers.

These Amplifiers are our Store Demonstration Models. 

They have about 800hrs on them.

They will be shipped by freight only



The Reference 750 monoblock amplifiers continue the story began
nearly 20 years ago with the introduction of the Reference 600; that is,
to create an ultimate, tube-driven amplifier with enough power to drive
any speaker load, and provide a musical experience unlike any before
it.  The Reference 750 redefines all expectations of what is possible
from an amplifier in a music playback system.  It is the culmination of
everything Audio Research knows about amplifier design and manufacture –
High Definition in its purest, most dynamic form.

Listening to Reference 750 monoblocks in a high performance system
is a transformative experience; under total control, speakers disappear
from the listening room and transport the listener into a
three-dimensional realm where music takes on a palpable, tangible form. 
Details from source material are resolved against a black background,
painting images in space with vivid reality.  Bass becomes the
foundation on which this living performance develops, produced with
startling temporal and timbral accuracy.  Here is the breath of the
performer, the pick against the string, the brilliance of a full

The Reference 750 is prepared to deliver 750 watts of
power into speaker loads of 4, 8 and 16 ohms.  This is achieved by the
use of a massive, custom- built power transformer delivering current
from sixteen KT120 vacuum tubes.  Thanks to extensive testing and strict
selection of tubes, the amplifier requires little maintenance and
obviates the need for costly and sonically deleterious automatic bias
systems.  Power supply regulation is also achieved by vacuum tube with a
6550WE and 6H30 driver.  The bulk power supply energy storage has been
increased to 1300 joules, a 30% increase over the preceding REF610T. 
Tube bias is controlled by two KT120 tubes, each driving a bank of eight

Visually, the Reference 750 is a monolithic tower design,
finished with monochromatic panels for a clean, contemporary
appearance.  The front panel displays two analog meters, one for output
wattage and bias, and the other for incoming A.C. line voltage.  Four
buttons beneath the top meter control meter brightness, bias power and
fan speed (for the optional ventilated top covers).  The back panel has
taps for 4, 8 and 16 ohm loads, as well as a tube hour running time
display.  Power connection is via a 20A IEC connector and cable.  Each
unit weighs approximately 170 pounds (77 kg).

750 watts per channel continuous from
20Hz to 20kHz. 1kHz total harmonic distortion typically 0.5% at 750
watts, below .04% at 1 watt. Approximate actual power available at
"clipping" 850 watts (1kHz). (Note that actual power output is dependent
upon both line voltage and "condition" i.e. if power line has high
distortion, maximum power will be affected adversely, although from a
listening standpoint this is not very critical.)

(-3dB points) 15Hz to 150kHz.

(-3dB points at 1 watt) 1 Hz to 200 kHz.

4.6V RMS Balanced for rated output. (24 dB gain into 8 ohms.)

200K ohms Balanced.


4, 8, 16 ohms.

Approximately 0.5dB 16 ohm load to open circuit (Damping factor approximately 17).

20 volts/microsecond.

1.5 microseconds.

Less than 0.2mV RMS – 110dB below rated output (IHF-A weighted, input shorted, 16 ohm output).

Approximately 1300 joules.

105-130VAC 60Hz (260-750VAC 50Hz) 2100 watts at rated output, 2400 watts maximum, 800 watts at "idle".

8 Matched pair KT120 Power Output; 1 6550WE Regulator; 1 6H30 Regulator Amplifier; 1 matched pair KT120 Driver; 1 6H30 follower.

13.5" (34.3 cm) W x 23" (58.4 cm) H x 20.8" (52.8 cm) D. Handles extend 1.5" (3.8 cm) forward and rearward.

170 lbs. (77.2 kg) Net; 395 lbs. (180 kg) per pair shipped weight.

California residents add sales tax
Credit Card and Paypal add 3.5% fee

Questions for the seller
Good afternoon, Are these amplifiers a 120V or a 220V system? Thanks
These are 120V
Hi, Please confirm that this is two mono blocks stacked in unit? Is the purchase contingent on purchase of speakers? Thought I a comment on that? thank you,
These are 2 mono blocks one for left channel and one for right channel. You can purchase them independently.
Any interest in trade ins: I have ayon audio orthos xs mono amps, 10 kt 150 tubes per amp, low hours, 3 yrs old: electrocompaniet nemo amps, 10 yrs old: holo audio spring 2 dac 1 yr old: schitt yggy dac, analog 2 : and t&a dac 8 dsd dac 1 yr old. thanks Jeff Baltzer
We are a store so the only thing we can do is sell your old product at a 25% commission and apply the money to the amplifiers.
Ow many hours on the meters
About 800.
What are the serial numbers?
82006301, 82006302
How long is the warranty!
Warranty has expired. For all Demos on ARC, the Warranty starts when the item is shipped.
Ask the seller a public question

You must log in to ask a question.

Return Policy
Return Window

Returns are not accepted on this item.


member since November 2009

Sunny Components Inc  Verified Dealer

Last 12 months

21 Watchers