Интегральные усилители — Moon by Simaudio 700i V2

The 700i v2 is an integrated amplifier from MOON by Simaudio, presented by the maker as a fully differential dual-mono design that uses technologies developed for its reference products. It sits above the MOON 600i v2 and is offered in black, silver or two-tone black and silver finishes, with availability depending on location.

Key specs that matter

Output power is 175 W per channel into 8 ohm and 350 W per channel into 4 ohm, with the first 5 W delivered in class A. Gain is 37 dB, input sensitivity ranges from 490 mV to 6.0 V RMS and input impedance is 23.7 kohm. Full-range frequency response is 10 Hz to 100 kHz, +0 and -0.1 dB. THD measured from 20 Hz to 20 kHz is 0.015 percent at 1 W and 0.04 percent at 175 W, intermodulation distortion is 0.02 percent and crosstalk at 1 kHz is -100 dB. Connections include four pairs of RCA inputs, one pair of XLR inputs and one RCA monitor loop. The chassis measures 47.6 x 14.0 x 46.0 cm (width x height x depth), and shipping weight is 28 kg.

Engineering and use context

Simaudio's Lynx technology removes the global feedback loop, which the company links to the elimination of common phase errors caused by feedback. The power supply is oversized and dual-mono, with one 500 VA toroidal transformer per channel using a Japanese core, and the preamplifier stage has its own dedicated transformer. Volume is set by the M-eVOL2 control, which has 530 steps for fine level adjustment. Each input has a gain offset adjustable by plus or minus 10 dB, so sources with different output levels can be brought to the same volume. Any input can also be configured as a bypass input, where the volume control is taken out of the circuit and the 700i v2 acts as a fixed-gain power amplifier, a feature Simaudio intends for use with a home-theater processor. The dual-mono layout keeps the left and right channels separate from the transformers onward, reflecting the fully differential circuit topology used through the signal path.

Pairing

The home-theater bypass lets the 700i v2 handle the main stereo pair in a multichannel system controlled by an external processor, while the XLR input accepts a balanced source and the monitor loop allows an external processor or recorder to be inserted into the signal chain.

Alternatives

The MOON 600i v2 sits one step lower in the range with 125 W per channel and the same M-eVOL2 volume control.