|Simaudio 760A Power Amplifier Review|
|Home Theater Power Amplifiers Stereo Amplifiers|
|Written by Andre Marc|
|Friday, 04 September 2015|
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Simaudio is held in the highest regard for its engineering-driven, no compromise approach to designing audio components. Their products are also considered works of art by many, with their futuristic industrial design and superior build quality. Their Neo 380D DAC and MOON 180D streamer remain in-house references.
Digital products aside, Simaudio has always been known for producing state of the art amplification. Their top shelf Evolution series offers robust power and stellar casework across preamplifiers, power amplifiers, and integrated amps. Simaudio sent along their Evolution 760A power amplifier for review, which retails for $8000. The 760A is the first in line in the Evolution series, and is packed with some of Simaudio’s best technology.
The chassis design and build quality are superb, with attention to detail in the construction, binding posts, and connectors being off the charts. The amplifier is rated at 130 watts per channel into 8 Ohms, and doubles to 260 watts per channel into 4 Ohms. According to Simaudio, the 760A is a “no overall feedback”, dual mono, Class A/B amplifier design, which uses “precision matched proprietary MOON Bipolar output transistors.” Simaudio also says they use the cleanest possible circuit layouts and aim for ultra short signal paths.
Simaudio also touts the use of an “oversized power supply using a custom proprietary toroidal transformer design.” The 760A has both XLR and RCA inputs, with Simaudio preferring XLR for maximum performance. The 760A, interestingly, has an onboard self-diagnostic system to detect overheating or the presence of DC in the input signal.
The casework, aside from being stunning visually, is functional too. Its heatsinks are “crafted from custom made aircraft-grade aluminum extrusions and covered with thermally transparent paint.” Special attention was paid to case rigidity to minimize external vibration. High quality support feet complete the picture.
In our system, the 760A is set up in various configurations. It is matched with two speakers, the Thiel CS2.4 floorstanders, and a brand new pair of Bryston Mini T stand mounted monitors. Sources, as noted, are Simaudio’s own Neo 380D DAC with built in volume control and MiND streamer module, a Revox A77 reel deck, and a SOtM sMS-100 server.
For the first part of the review, the excellent Luminous Audio Axiom passive controller is used, followed by the Coffman Labs G1-A tubed linestage, hand built by Damon Coffman, for the duration. Cabling is a mix of Stager, Transparent, DH Labs, and Acoustic Zen. The 760A is set up on a Symposium Rollerblock Jr.’s on a Symposium Svelte Shelf. No other special tweaks are implemented.