Eversolo - AMP-F8 - Class AB Stereo Power Amplifier

Power with precision. The Eversolo AMP-F8 is a high-performance Class AB stereo power amplifier delivering 180W per channel into 8Ω (280W into 4Ω) or 500W in bridged mono — driven by a custom 800W toroidal linear power supply, three pairs of precision-matched MOSFETs per channel, THD of just 0.003%, SNR ≥115dB, and a damping factor over 400. Balanced XLR and unbalanced RCA inputs. Selectable gain. 12V trigger and signal sensing. Analogue VU meters. CNC-machined aluminium chassis. Power with Precision A power amplifier has one job: to take the signal from a preamplifier, DAC, or streaming source, and deliver it to the loudspeakers with as much current, as little distortion, and as much control as possible. The Eversolo AMP-F8 does that job with a level of technical performance that would have been considered exceptional at any price only a few years ago — and brings it into a compact, beautifully finished chassis that integrates seamlessly with the Eversolo ecosystem or any high-quality source component. First shown at HIGH END Vienna 2026, the AMP-F8 is Eversolo's dedicated power amplifier statement — a product that makes the company's wider ambitions in traditional two-channel hi-fi increasingly difficult to overlook. It out-measures the AMP-F10 sitting above it in the range: THD of 0.003% against the F10's 0.008%, signal-to-noise of 115dB against 113dB. When a company's more affordable amplifier outperforms the more expensive one on the most important measurements, it deserves attention. 800W Toroidal Linear Power Supply — The Foundation of Everything <cite index="34-1">To ensure increased power output, the AMP-F8 features a linear power supply based on a toroidal transformer developed specifically for this model.</cite> At 800 watts of transformer capacity, the power supply provides substantial energy reserves for musical peaks and difficult speaker loads — ensuring the output stage is never starved of current at the moment it needs it most. A linear toroidal transformer is the established preference for serious audio power supplies: lower electromagnetic interference than a switch-mode supply, faster response to transient current demands, and a more stable operating environment for the sensitive amplifier circuitry above it. Class AB with Class A Bias — Three Matched MOSFET Pairs Per Channel <cite index="32-1">AMP-F8 adopts a high-fidelity Class AB amplification architecture. To improve circuit consistency, each channel of AMP-F8 uses three pairs of precision-matched high-current MOSFET power devices.</cite> <cite index="34-1">The AMP-F8 features a Class AB amplification architecture with Class A bias on the first few watts.</cite> The choice of MOSFETs over bipolar transistors reflects a deliberate sonic preference — MOSFET output stages are known for combining strong driving capability with a naturally smooth, grain-free sonic character that bipolar designs can struggle to match. Three matched pairs per channel, operating in parallel, distribute the current demand and reduce the thermal and electrical stress on any individual device — improving linearity, extending reliability, and giving the amplifier the current delivery headroom to handle complex speaker loads without compression. 180W Stereo / 500W Bridged Mono — Configurable for Any System <cite index="38-1">In stereo mode, the AMP-F8 produces 180W RMS per channel into 8Ω and 280W RMS into 4Ω. When configured in bridged mono operation, output increases to an impressive 500W RMS into 8Ω.</cite> The stereo configuration makes the AMP-F8 genuinely capable with demanding full-range floorstanding speakers, large bookshelf designs, and low-sensitivity speakers that require substantial current to perform at their best. The bridged mono configuration enables either a dedicated monoblock installation (with a pair of AMP-F8 units) or the integration of a high-power mono channel in a bi-amplified system. THD 0.003% — SNR ≥115dB — Damping Factor >400 The AMP-F8's technical specifications define what "low distortion" and "tight bass control" actually look like when measured: <cite index="39-1">total harmonic distortion of just 0.003% at 1kHz, a signal-to-noise ratio of ≥115dB (A-weighted), and a damping factor above 400 at 8Ω.</cite> A damping factor above 400 is a direct measure of the amplifier's ability to control the speaker cone — specifically, its ability to resist the back-EMF generated when the cone overshoots and must be brought back under control. High damping factor translates directly to tighter, more defined bass and better dynamic control across the full frequency range. <cite index="32-1">With a damping factor over 400, AMP-F8 delivers excellent speaker control.</cite> Balanced XLR and Unbalanced RCA Inputs — Selectable Gain <cite index="41-1">Each channel takes a balanced XLR or an unbalanced RCA, so the amplifier drops into a system built around a DMP-A8 Gen 2 without an adapter in the signal path.</cite> Both inputs operate at 10kΩ input impedance. A rear-panel gain switch provides two gain settings — 23dB or 29dB — allowing the AMP-F8 to be optimised for the output level of the preamplifier or source component driving it. This is a thoughtful provision that allows the amplifier to be used directly from a streaming DAC with a volume control, without a separate preamplifier, while maintaining optimal signal-to-noise performance. 12V Trigger and Signal Sensing — VU Meters — CNC Aluminium Chassis <cite index="41-1">A 12V trigger wakes the amplifier with the source, and signal sensing does the same job if your source has no trigger output.</cite> Two analogue VU meters on the front panel provide real-time output level indication — a classic reference to traditional power amplifier design that also gives a visual window into the amplifier's dynamic behaviour during playback. <cite index="32-1">AMP-F8 features a unibody aluminum chassis formed through precision CNC machining, with a refined anodized sandblasted finish, giving the body an understated metallic feel and durable wear resistance. The thick metal enclosure helps suppress physical resonance while improving thermal efficiency and electromagnetic shielding. Together with a natural convection cooling system and optimized internal layout, AMP-F8 remains stable even during long listening sessions and high-load output.</cite> Feature Cards ⚡ 800W Toroidal Linear Power Supply — 180W / 500W Output A custom 800W toroidal transformer provides massive power reserves. 180W per channel into 8Ω, 280W into 4Ω in stereo mode; 500W into 8Ω in bridged mono — for any speaker, any system. 🔬 0.003% THD — ≥115dB SNR — Damping Factor >400 Lower distortion than the AMP-F10 above it in the range. Three matched MOSFET pairs per channel in Class AB with Class A bias — precise, quiet, and with the speaker control that high-quality bass demands. 🔌 Balanced XLR + Unbalanced RCA — Selectable 23/29dB Gain Both balanced and unbalanced inputs at 10kΩ impedance — connecting directly to any DAC, preamp, or streaming source without adapters. Rear-panel gain selection for optimal signal level matching. 🤖 12V Trigger + Signal Sensing — Analogue VU Meters Automatic power-on via 12V trigger or signal sensing. Classic analogue VU meters provide real-time output monitoring. CNC-machined aluminium chassis with anodized sandblasted finish — natural convection cooling. Editorial Blockquote "More than output power alone, a high-performance amplifier must provide stable energy delivery, strong speaker control, and a quiet background that allows musical details, dynamics, and spatial depth to emerge naturally. The AMP-F8 was built to deliver exactly that." — Eversolo At-a-Glance Bullets Class AB stereo power amplifier — Class A bias at low power Power output (stereo): 180W RMS / 8Ω — 280W RMS / 4Ω Power output (bridged mono): 500W RMS / 8Ω Power supply: custom 800W toroidal linear transformer Output stage: 3 × matched high-current MOSFET pairs per channel THD+N: 0.003% (1kHz) SNR: ≥115dB (A-weighted) Damping factor: >400 (8Ω) Frequency response: 10Hz–30kHz (±0.5dB @ 1W/8Ω) Crosstalk: ≤–95dB (@ 180W / 8Ω / 1kHz) Inputs: 1 × balanced XLR + 1 × unbalanced RCA per channel — 10kΩ input impedance Gain: selectable 23dB / 29dB (rear panel switch) Standby: 12V trigger input + signal sensing Analogue VU meters — front panel CNC-machined aluminium chassis — anodized sandblasted finish Natural convection cooling — no fan Dimensions (W × D × H): 265 × 388 × 119mm Weight: 15.9kg Specifications Amplifier Specification Detail Class Class AB (with Class A bias at low power) Output Devices 3 × precision-matched MOSFET pairs per channel Power Output (Stereo, 8Ω) 180W RMS per channel Power Output (Stereo, 4Ω) 280W RMS per channel Power Output (Bridged Mono, 8Ω) 500W RMS THD+N 0.003% (1kHz) SNR ≥115dB (A-weighted) Damping Factor >400 (8Ω) Frequency Response 10Hz–30kHz (±0.5dB @ 1W / 8Ω) Crosstalk ≤–95dB (@ 180W / 8Ω / 1kHz) Power Supply Specification Detail Type Custom toroidal linear transformer Capacity 800W Inputs Specification Detail Balanced Input 1 × XLR per channel Unbalanced Input 1 × RCA per channel Input Impedance 10kΩ Gain Settings 23dB / 29dB (rear panel switch) General Specification Detail Trigger 12V trigger input Auto Power-On Signal sensing Display Analogue VU meters Chassis CNC-machined aluminium — anodized sandblasted finish Cooling Natural convection (fanless) Dimensions (W × D × H) 265 × 388 × 119mm Weight 15.9kg Closing Quote "800 watts of linear transformer capacity. Three MOSFET pairs per channel. THD of 0.003%. The Eversolo AMP-F8 — serious power, seriously controlled."