Amplifiers, Audio Research, Audio Research, Brands, Occasions / Special Offers
Audio Research REF 75 Power Amplifier (Occ) Verkocht.
Original price was: € 9.250,00.€ 4.995,00Current price is: € 4.995,00.
- Occasion, from 1st owner in just excellent condition
- 4x KT 120, 75Watts per channel.
- Includes all boxes, manuals and goodies.
- Beautiful match with the LS 27 we offer.
Out of stock
Description
Audio Research Reference 75 en Reference 75 SE.
Waarschijnlijk overbodig om te zeggen dat Audio Research met een nieuw product alweer een klassieker heeft ontworpen.
Dat geldt voor de Audio Research Reference 75 en voor de Reference 75 SE.
Bij beide eindversterkers heeft men gebruik gemaakt van nieuw ontworpen buizen.
In de Reference 75 worden de KT 120 buizen gebruikt en in de Reference 75 SE zitten KT-150 buizen.
De schakelingen zijn nagenoeg hetzelfde en er is de mogelijkheid om de Reference 75 te upgraden naar de 75 SE.
Het formaat van de versterker geeft je het gevoel dat het een complexe versterker is maar schijn bedriegt. Doordat de buizen veel vermogen kunnen leveren heb je er maar twee per kanaal nodig en kun je de schakeling simpel houden. Het gebruik van twee buizen heeft veel voordelen. Meer buizen geeft wat minder detail en precisie; het geluid is wat omfloerst. Beide buizen; de KT-120 en KT-150 leveren een enorm vermogen waardoor de ontwerpers van Audio Research de mogelijkheid hebben om de buizen “conservatief” in te stellen. Dit betekent dat niet het volle vermogen uit de buis wordt gehaald en de buizen 2 maal zolang meegaan.
Op de voorkant zitten twee meters hiermee kun je zelf de ruststroom per buis in de gaten houden en bijstellen mocht de ene buis meer verlopen dan de ander.
De voeding van deze eindversterkers heeft meer reserve dan menig andere versterker en is daardoor niet kieskeurig voor de luidsprekers die je er op aansluit.
From the ARC website:
The Reference 75 is a stunning amplifier in every way – performance, styling and reliability combined to elevate your music listening to a new experience. Capable of controlling a wide variety of speakers, the Reference 75 will transport you into the musical performance unlike any other comparable amplifier.
At the heart of the Reference 75 is decades of proven Audio Research vacuum tube technology, a legacy unrivaled by any other manufacturer of tube electronics. Developed through hundreds of hours of critical listening, the carefully selected components comprising the Reference 75 combine to provide an amplifier which transcends traditional hi-fi, instead relaying music with realism and tangibility.
Visually, the Reference 75 hearkens back to past Audio Research products, taking inspiration from earlier amplifer designs. With its two large VU meters, which display power output as well as provide bias adjustments, the Reference 75 has a timeless appearance resembling precision laboratory equipment and an overbuilt, industrious aesthetic. Offered in both natural aluminum and black finishes, the understated look will complement any system.
The KT120 vacuum tube delivers power from the amplifier to your speakers. Newly designed solely for the audio industry, the KT120 offers higher power handling and current delivery. A matched pair of tubes per channel run conservatively, ensuring stable operation and many hours of trouble-free listening. Custom designed capacitors couple the output of the tubes to the speakers for the purest signal possible.
The Reference 75 is the new generation from a lineage of amplifiers only Audio Research could produce. Experience real music and unleash the capacity of your system – music in High Definition®.
POWER OUTPUT
75 watts per channel continuous from20Hz to 20kHz. 1kHz total harmonic distortion typically 0.6% at 75 watts, below 0.05% at 1 watt. Approximate actual power available at ‘clipping’ 76 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) 7Hz to 60kHz
FREQUENCY RESPONSE
(-3dB points at 1 watt) 0.7Hz to 75 kHz
INPUT SENSITIVITY
1.4V RMS BAL for rated output. (25 dB Bal gain into 8 ohms.)
INPUT IMPEDANCE
300K ohms Balanced
OUTPUT TAPS
8 ohms, 4 ohms.
OUTPUT REGULATION
Approximately 1.0dB 8 ohm load to open circuit.
OVERALL NEGATIVE FEEDBACK
15dB
DAMPING FACTOR
Approximately 8
DISTORTION
–
SLEW RATE
10 V/µs
RISE TIME
4.0 µs
HUM & NOISE
Less than 0.06mV RMS – 112dB below rated output (IHF weighted, input shorted).
POWER SUPPLY ENERGY STORAGE
Approximately 520 joules
POWER REQUIREMENTS
105-125VAC 60Hz (210-250VAC 50Hz) 410 watts at rated output, 500 watts maximum, 230 watts idle.
TUBE COMPLEMENT
REFERENCE 75: (2 matched pairs) KT120 power output, (2) 6H30 driver. REFERENCE 75 SE: (2 matched pairs) KT150 power output, (2) 6H30 driver.
OTHER
Output polarity: Non-inverting. Balanced input pin 2+ (IEC-268).
DIMENSIONS
19″ (48.3 cm) W x 8 ¾” (22.2 cm) H x 19½” (49.5 cm) D. Handles extend 1½” (3.8 cm) forward.
WEIGHT
47 lbs. (21.3 kg) Net; 63 lbs. (28.6 kg) Shipping.
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