Eversolo AMP-F8 Bridgeable 180w Stereo Power Amplifier

High-performance Class AB stereo power amplifier
800W custom toroidal linear power supply
Three pairs of precision MOSFET output devices
Ultra-low 0.003% harmonic distortion
Up to 500W into 8Ω in bridged mode
Designed for demanding full-range loudspeaker systems

The AMP-F8 is Eversolo’s half-width Class AB power amplifier, and the more affordable way into the company’s linear-supply amplification. It has no streaming, DAC or volume control. Its job is to take a line-level signal from a preamplifier, or from a streamer with variable output, and drive a pair of loudspeakers. It shares its width and depth with Eversolo’s DMP streamers, so it sits alongside them as a matched pair. Next to the AMP-F10 above it, it gives up some power, the dual-mono layout and some of the supply reserve, and keeps the same Class AB MOSFET approach, switchable gain and analogue meters for less.

Brief product overview

A Class AB stereo power amplifier built around three pairs of precision MOSFET output devices and an 800-watt custom toroidal linear power supply. It is rated at 180 watts per channel into 8 ohms and 280 watts into 4 ohms. Bridged as a mono amplifier, it delivers 500 watts into 8 ohms. Eversolo quotes distortion at 0.003% at 1kHz, a signal-to-noise ratio of at least 115dB (A-weighted), a damping factor above 400 and a frequency response of 10Hz to 30kHz within half a decibel. Gain is switchable between 23dB and 29dB, so the amplifier can be matched to the output level of the source driving it. Inputs are one pair of balanced XLR and one pair of single-ended RCA, and 12V trigger connections let the amplifier power on and off with its preamplifier. Dual analogue VU meters sit on the front of a CNC-machined aluminium case measuring 119 × 265 × 388mm and weighing 15.9kg.

How it sounds

The AMP-F8’s character follows from its design. A linear supply of this size gives the output stage reserves for dynamic peaks, so bass should stay held together as the level rises rather than softening. The MOSFET Class AB output stage and very low quoted distortion point to a clean, neutral amplifier that adds little of its own. The high damping factor gives firm control over the bass drivers of a floorstanding speaker. It is a new model, so we would rather describe what the engineering delivers than claim a signature it has not yet earned in the listening room. The honest limits: 180 watts into 8 ohms is generous for most speakers of average sensitivity, but large, low-sensitivity speakers in a big room will find the AMP-F10’s extra reserve worthwhile. 

Weight                           15.9 kg
Dimensions (HxWxD)    119 × 265 × 388 mm
Shipping Weight            18.6 kg
Enclosure type               Stereo Power Amplifier
Enclosure material         CNC-Machined Aluminium

Technical specifications
Power output                  180 W (8 Ω) / 280 W (4 Ω)
Amplifier Classs             Class AB
THD+N                           0.003% @ 1kHz
Frequency response      10Hz–30kHz (±0.5dB, @ 1W/8Ω)
S/N Ratio                       ≥115dB (A-weighted)
Crosstalk                       ≤−95dB (180W @ 8Ω / 1kHz)
Input sensitivity              XLR: 5.2V / 2.6V; RCA: 2.65V / 1.3V
Input impedance            XLR: 10kΩ / RCA: 10kΩ
Output Impedance        1200W
Gain                               23dB / 29dB Selectable
Input voltage                 100–120V AC 60Hz / 220–240V AC 50Hz
Control system              12V Trigger In / Out
Crosstalk                       ≤−95dB (180W @ 8Ω / 1kHz)
Watts per channel         180W RMS @ 8Ω / 280W RMS @ 4Ω
Number of channels      2 (Stereo) / 1 (Bridged Mono)
Display                          Dual Analogue VU Meters
Power Supply                800W Custom Toroidal Linear Power Supply
Damping Factor             >400 (@ 8Ω, 1kHz)
Binding Posts                Premium Speaker Output Terminals

Inputs/Outputs
Inputs                            Balanced XLR, Unbalanced RCA, 12V Trigger Input
Outputs                         Speaker Outputs, 12V Trigger Output
Analog inputs                1x RCA (Stereo), 1x XLR (Stereo)
Analog outputs              Speaker Outputs
Connections                  XLR, RCA, Speaker Terminals, 12V Trigger In/Out
Analog Audio Output     Speaker Outputs

Connectivity
Media Connection Options  Balanced XLR, Unbalanced RCA, 12V Trigger

Streaming
Control Systems     12V Trigger In/Out
Control Methods     Front Panel Controls, 12V Trigger

Included accessories
What's in the box    Eversolo AMP-F8 ×1, Power Cable ×1, Trigger Cable ×1, User Manual ×1