Audio Research Reference 75 SE Power Amplifier

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What HFL Thinks

Audio Research Reference 75 SE - We really are proud to add Audio Research to our portfolio of products to offer our customers as not only are they one of the most respected and oldest companies trading today in HiFi but more importantly they produce some of the most musically engaging products available that constantly get glowing reviews worldwide. Based in the USA and known for their love of the use of Valves for the majority of their products Audio Research really do sum up everything that is great about Highend Audio offering beautifully made products that push the boundaries but they always put the music first and foremost so please come into HFL for a listen.

The Reference 75 SE 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 SE will transport you into the musical performance unlike any other comparable amplifier. At the heart of the Reference 75 SE 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 SE combine to provide an amplifier which transcends traditional hi-fi, instead relaying music with realism and tangibility.

Visually, the Reference 75 SE 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 SE 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 KT150 vacuum tube delivers power from the amplifier to your speakers.  Newly designed solely for the audio industry, the KT150 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 SE 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®.

TECHNICAL SPECIFICATION

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 POLARITY

  • Non-inverting. Balanced input pin 2+ (IEC-268).

OUTPUT TAPS

  • 8 ohms, 4 ohms.

OUTPUT REGULATION

  • Approximately 1.0dB 8 ohm load to open circuit (Damping factor approximately 8).

OVERALL NEGATIVE FEEDBACK

  • 15dB.

SLEW RATE

  • 10 volts/microsecond.

RISE TIME

  • 4.0 microseconds.

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.

TUBES REQUIRED

  • 2 – Matched pair KT150 – Power Output; 2 – 6H30 Driver.

DIMENSIONS

  • 19" (48.3 cm) W x 8.75" (22.2 cm) H x 19.5" (49.5 cm) D. Handles extend 1.5" (3.8 cm) forward.

WEIGHT

  • 47 lbs. (21.3 kg) Net; 63 lbs. (28.6 kg) Shipping.

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PMC speakers (Brystons UK distributer) are re-affirming their commitment to the development of Bryston for domestic use in the UK through the creation of a network of Bryston Centres of Excellence, PMC have appointed Tom Barron to the position of Bryston account manager, here is what he had to say about the new venture - account manager, here s what Tom had to say on the new venture -

"I will be working with a carefully selected group of retailers across the UK so we have strong geographical coverage that puts Bryston within easy reach of audiophiles up and down the land. Each Centre of Excellence will receive in-depth training to ensure they are fully conversant with all aspects of the brand, to enable them to serve their customers with confidence."

HiFi Lounge have been big fans of Bryston for many years now, owning much of their equipment personally before starting HiFi Lounge. We even started the always active Bryston Owners Thread on AVForums to which we contribute regularly, so it really is a privilege to be part this new scheme. We have a vast knowledge regarding the current Bryston range of which we have most on demo, so if you have any questions or would like to come in for a listen please do not hesitate to get in touch. There is nothing we like more than talking about and listening to Bryston equipment.