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 
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smer319 

member since November 2009

Sunny Components Inc  Verified Dealer

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Condition
9/10
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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 cost
Original accessoriesBox, Manual
AverageResearch 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.
Email: [email protected]
Store website: www.sunnyaudiovideo.com

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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


REFERENCE 750

AMPLIFIER

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 orchestra.

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 tubes.

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).

POWER OUTPUT
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.)

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

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

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

INPUT IMPEDANCE
200K ohms Balanced.

OUTPUT TAPS

4, 8, 16 ohms.

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

OVERALL NEGATIVE FEEDBACK
13dB.
SLEW RATE
20 volts/microsecond.

RISE TIME
1.5 microseconds.

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

POWER SUPPLY ENERGY STORAGE
Approximately 1300 joules.

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

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

DIMENSIONS
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.

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


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Questions for the seller
Can he change it to 220V? Greetings
Probably. I do not know how. I cannot take responsibility for this. Just not qualified for such upgrades in our store
Your ad states these Audio Research Reference 750 Mono Block Amplifiers have about 800 hours on their tubes? What is the expected remaining tube life? And, what is the cost to re-tube both amplifiers? Thanks.
All tubes are like a light bulb. Nobody can predict when they will fail. From what I remember expected life should be between 2500 to 4000 hours. Higher on Pre-Amplifiers and DAC's. There are 18 KT120 tubes per amplifier. You can purchase tubes from several sources. I had a customer who spoke highly about Reverb. Here is a link for you. $49.00 ea. https://reverb.com/item/20634282-tung-sol-kt120-audiophile-power-tube-brand-new-with-free-platinum-matching?utm_campaign=US-Shop_unpaid&utm_medium=cpc&utm_source=google
What is your fee for an in-store demo?
These are packed and put away. Can you tell me what kind of system would you want it demonstrated with ? Please call the store...Probably $500.00 which will be applied to purchase price of $16995.00
What is the inconvenience fee associated with an in-store demo...fully face masked, of course?
These are packed and put away. Can you tell me what kind of system would you want it demonstrated with ? Please call the store...Probably $500.00 which will be applied to purchase price of $16995.00
What is the fee for an in store demo?
These are packed and put away. Can you tell me what kind of system would you want it demonstrated with ? Please call the store...Probably $500.00 which will be applied to purchase price of $16995.00
What are the serial numbers?
82006301, 82006302
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.
Ow many hours on the meters
About 800.
How long is the warranty!
Warranty has expired. For all Demos on ARC, the Warranty starts when the item is shipped.
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.
Are you going to charge a fee for an in store demo?
Yes. We are. Although the fee can be used towards purchase of other electronics also. Too many hobbyists like to pass time hearing products. They ruin it for businesses.
Good afternoon, Are these amplifiers a 120V or a 220V system? Thanks
These are 120V

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