Audio T Verdict
The Eversolo AMP-F10 is a serious high-current power amplifier designed for systems where control, scale and substantial power reserves are required.
Its Class AB circuit uses Class A bias at lower output levels before moving into Class AB operation as power demand increases. This approach is intended to combine the refinement associated with Class A operation with the efficiency and output capability of a powerful Class AB amplifier.
In stereo mode, the AMP-F10 delivers 200W per channel into 8-ohm loudspeakers, 320W per channel into 4 ohms and 450W per channel into 2 ohms. Bridge mode transforms it into an extremely powerful mono amplifier, delivering 650W into 8 ohms or 950W into 4 ohms.
Five pairs of precision-matched high-current MOSFETs are used for each channel, supported by a substantial linear power supply, dual-differential amplifier circuitry and a damping factor greater than 600.
Balanced XLR and unbalanced RCA inputs, selectable 23dB or 29dB gain, trigger control, signal-sensing standby and stereo or bridged operation make the AMP-F10 unusually adaptable for such a powerful amplifier.
It contains no volume control, source selection, DAC, streaming platform or phono stage. A suitable pre-amplifier, streamer with variable outputs or integrated system controller is essential. Partnered carefully, however, the AMP-F10 provides the authority and current delivery required to control a wide selection of demanding loudspeakers.
Eversolo AMP-F10 Class AB Stereo Power Amplifier
The Eversolo AMP-F10 is a high-performance stereo power amplifier developed to partner a suitable analogue pre-amplifier, streaming pre-amplifier or DAC with variable outputs.
It accepts balanced XLR or unbalanced RCA signals and provides the speaker-level power required to drive a pair of passive loudspeakers.
The AMP-F10 can operate as a conventional stereo amplifier or be switched into bridge mode, allowing one amplifier to power a single loudspeaker at considerably higher output levels.
A Pre-Amplifier Is Required
The AMP-F10 is a power amplifier rather than an integrated amplifier.
It does not provide source selection or a front-panel volume control. Connect it to a suitable pre-amplifier, DAC with safe variable analogue outputs, streamer with pre-amplifier functionality or another compatible system controller.
- No built-in volume control
- No source selection
- No network music streaming
- No internal DAC
- No digital audio inputs
- No phono stage
- No headphone output
- No subwoofer output
Class AB Amplification with Class A Bias
The AMP-F10 uses a Class AB output stage with Class A bias.
At lower output levels, the amplifier operates within its Class A-biased region. As the music demands greater power, the circuit moves progressively into Class AB operation.
This allows the amplifier to provide considerable output power without the continuous power consumption and heat generation associated with a traditional high-powered pure Class A design.
The amplifier will still become warm during normal operation. It should be installed with adequate space around its side-mounted heatsinks and upper ventilation areas.
Substantial Stereo Power
In stereo mode, the AMP-F10 provides:
- 200W RMS per channel into 8 ohms
- 320W RMS per channel into 4 ohms
- 450W RMS per channel into 2 ohms
The rise in output as loudspeaker impedance falls demonstrates the amplifier's ability to supply significant current into more demanding loads.
This does not mean that every loudspeaker should be driven at extremely high volume. Power handling, room size, listening distance and the mechanical limits of the loudspeaker must all be considered.
Bridged Mono Operation
A rear-panel switch converts the AMP-F10 from a two-channel stereo amplifier into a single-channel bridged mono amplifier.
In bridge mode, one AMP-F10 provides:
- 650W RMS into an 8-ohm loudspeaker
- 950W RMS into a 4-ohm loudspeaker
A pair of AMP-F10 amplifiers can therefore be used as extremely powerful mono amplifiers, with one unit driving the left loudspeaker and the other driving the right.
Bridge mode may benefit large listening rooms, inefficient loudspeakers and systems requiring greater dynamic headroom. It should not be treated as an automatic upgrade for every system.
Switch the Amplifier Off Before Changing Mode
Power down the AMP-F10 and disconnect the loudspeakers before moving the stereo and bridge mode switch.
The speaker terminals are connected differently in bridge mode. Incorrect wiring can damage the amplifier or loudspeaker.
Confirm that the loudspeaker impedance and power handling are appropriate for the AMP-F10's bridged output before use.
Bridge-Mode Speaker Connection
In normal stereo operation, each loudspeaker connects to its own red positive and black negative output terminals.
In bridge mode, the loudspeaker connects across the two red terminals. The red terminal for the left channel becomes the positive connection, while the red terminal for the right channel becomes the negative connection.
The black speaker terminals are not used in bridge mode.
Check the Wiring Before Powering On
Bridge-mode wiring differs from an ordinary stereo connection and must be checked carefully.
Never alter the operating mode or loudspeaker wiring while the amplifier is powered on.
Five Pairs of Matched MOSFETs Per Channel
Each channel uses five pairs of precision-matched high-current MOSFET output transistors.
Using several devices in parallel distributes the electrical load across the output stage, supporting the amplifier's high current delivery and substantial power output.
Careful matching helps maintain consistent behaviour between the devices and reduces the potential for unequal current distribution.
The large side-mounted heatsinks help remove the heat produced by the output transistors during extended listening.
Independent Left and Right Amplifier Channels
The left and right audio channels use separate signal paths and independently arranged amplifier sections.
This separation helps reduce interaction and crosstalk between the channels, supporting clear stereo positioning and a stable soundstage.
It also provides a symmetrical rear-panel layout, with separate XLR, RCA and input-selection controls for the left and right channels.
Dual-Differential Amplifier Circuit
The AMP-F10 uses dual-differential input amplification for low-level analogue signals.
Its symmetrical circuit layout and negative-feedback arrangement are intended to reduce distortion, reject common-mode interference and maintain linear behaviour across a wide output range.
The balanced architecture makes the XLR input particularly suitable for partnering the AMP-F10 with a compatible fully balanced pre-amplifier or streamer.
High-Capacity Linear Power Supply
A substantial dual-channel linear power supply provides the current required by the left and right output stages.
High-power musical passages can place very sudden demands on an amplifier. A suitably capable power supply helps prevent bass transients and large dynamic peaks from causing the midrange or treble to become strained.
The amplifier has a maximum specified power requirement of 1200W, so its mains connection and supporting equipment should be chosen appropriately.
Advanced DC Filtering
A DC filtering circuit is positioned between the incoming AC mains supply and the amplifier's audio power supply.
Small amounts of unwanted DC on an AC mains supply can cause a large toroidal transformer to vibrate or produce mechanical hum.
The filtering circuit is designed to reduce this low-frequency DC interference before it reaches the transformer, helping provide cleaner operating conditions for the amplifier circuitry.
Mechanical Hum and Loudspeaker Hum Are Different
Transformer noise is a mechanical sound produced by the amplifier itself. Hum through the loudspeakers is normally related to signal grounding, cabling or connected equipment.
The built-in DC filter may reduce transformer noise caused by mains contamination, but it cannot correct every form of system hum.
High Damping Factor
Eversolo specifies a damping factor greater than 600 at 1kHz into an 8-ohm load.
Damping factor describes the amplifier's electrical control over the connected loudspeaker drivers.
A high figure can help the amplifier control the movement of large bass drivers, although the final result also depends on the loudspeaker crossover, cable resistance, room acoustics and cabinet design.
Low Distortion and Wide Dynamic Range
Total harmonic distortion and noise are specified at 0.008% at 1kHz.
The signal-to-noise ratio is rated at 113dB or greater, A-weighted.
These figures support the amplifier's ability to reproduce quiet musical information while retaining the headroom needed for large dynamic changes.
Wide Frequency Response
The AMP-F10's specified frequency response extends from 10Hz to 30kHz within plus or minus 0.5dB when measured at 1W into 8 ohms.
This covers the audible frequency range while allowing the amplifier to reproduce the low-frequency and high-frequency content surrounding it without an abrupt response limitation.
Balanced XLR Inputs
A balanced XLR input is provided for each channel.
Balanced connection can improve rejection of electrical interference, particularly where the source and power amplifier are separated by longer interconnect cables.
Eversolo recommends the XLR input where the connected pre-amplifier provides a correctly configured balanced output.
The XLR input impedance is 10k ohms.
Unbalanced RCA Inputs
An unbalanced RCA input is also provided for each channel.
This makes the AMP-F10 compatible with conventional pre-amplifiers, DACs and streamers that do not provide balanced outputs.
The RCA input impedance is 10k ohms.
Use either the XLR or RCA input for each channel. Do not feed both inputs simultaneously.
Independent Input Selection
Separate rear-panel switches select the XLR or RCA connection for the left and right channels.
Both switches should normally be set to the same input type.
Check their positions before powering on, particularly after moving or reconnecting the system.
Selectable 23dB or 29dB Gain
Two amplifier gain settings allow the AMP-F10 to be matched more carefully to the output level of the connected pre-amplifier and the sensitivity of the loudspeakers.
23dB Gain
The lower 23dB setting requires a higher input voltage to reach full rated power.
It can provide a wider usable range on the pre-amplifier's volume control when the source has a strong output or the loudspeakers are relatively sensitive.
29dB Gain
The 29dB setting requires less input voltage to reach full rated power.
It may be preferable with lower-output pre-amplifiers or less sensitive loudspeakers, but it can also increase the apparent noise level and make the volume rise more quickly.
Gain Is Not the Same as Maximum Power
Changing the gain setting does not alter the AMP-F10's maximum rated output power.
It changes the input voltage required to reach that output. Use the setting that provides suitable volume range, noise performance and compatibility with the connected pre-amplifier.
Input Sensitivity
When producing 200W into 8 ohms at 1kHz, the specified input requirements are:
- XLR at 23dB gain: 5.2V
- XLR at 29dB gain: 2.4V
- RCA at 23dB gain: 2.65V
- RCA at 29dB gain: 1.3V
These figures are important when the AMP-F10 is partnered with a DAC or streamer used directly as a pre-amplifier.
The source must provide sufficient output voltage while also offering safe and predictable volume control.
Analogue VU Meters
Two illuminated VU-style meters dominate the front panel.
They provide a visual indication of the output activity for the left and right channels while reinforcing the AMP-F10's traditional full-size power-amplifier appearance.
The meters are indicators rather than precision test instruments and should not replace sensible listening levels or careful loudspeaker matching.
Front Standby Control
A centrally positioned front-panel button controls standby and operating status.
A bi-colour illuminated ring shows the current state:
- White indicates that the amplifier is operating
- Orange indicates standby
When a trigger cable is connected to the trigger input, the front standby button is disabled and the connected source controls the amplifier's operating state.
Trigger Standby Mode
Trigger mode allows a compatible pre-amplifier, streamer or system controller to switch the AMP-F10 on and off automatically.
The trigger input accepts a compatible signal between 5V and 12V.
A trigger output is also provided. This can be used to synchronise a second AMP-F10 when two amplifiers are operating in bridged mono mode.
Signal-Sensing Standby Mode
Signal mode provides automatic power management without requiring a trigger connection.
If no usable audio signal is detected, the AMP-F10 enters standby after approximately 20 minutes.
It returns to operation when it detects an audio signal or an increase in volume from the connected source.
Choose the Correct Standby Mode
Trigger control will normally provide the most predictable operation where the pre-amplifier offers a compatible trigger output.
Signal sensing is useful where no trigger is available, although very quiet signals or unusual system behaviour may affect automatic activation.
Protection Systems
The AMP-F10 includes protection against overcurrent, overheating and short circuits.
These systems are intended to protect the amplifier and connected loudspeakers when an unsafe operating condition is detected.
Protection circuitry should not be treated as permission to use unsuitable loudspeaker loads, incorrect wiring or inadequate ventilation.
Large Side-Mounted Heatsinks
Substantial heatsinks run along both sides of the chassis.
These dissipate heat from the output stage during extended listening and high-power operation.
The amplifier should be placed on a rigid shelf with free airflow around both sides and above the case.
Do Not Enclose the Amplifier
Do not place the AMP-F10 inside a tightly enclosed cabinet or directly against another heat-producing component.
Avoid covering the heatsinks or placing objects on top of the amplifier. Its 18kg weight also requires a suitably strong equipment rack or shelf.
Mains Voltage Selection
A 115V and 230V mains-voltage selector is fitted to the underside of the amplifier.
The switch must be set correctly for the local mains supply before the AMP-F10 is connected to power.
UK operation normally requires the 230V position, but the actual setting should always be checked rather than assumed.
Incorrect Voltage Selection Can Cause Serious Damage
Do not power on the amplifier until the voltage-selector position has been confirmed.
Disconnect the mains cable before checking or changing the selector. Contact Audio T if there is any uncertainty.
Speaker Matching
The AMP-F10's high output and ability to drive lower-impedance loads make it suitable for many demanding standmount and floorstanding loudspeakers.
However, power output is only one part of amplifier matching. The following should also be considered:
- Loudspeaker nominal and minimum impedance
- Sensitivity and recommended amplifier power
- Crossover complexity
- Room size and listening distance
- Preferred listening level
- Pre-amplifier output voltage
- Required gain setting
- Loudspeaker power handling
A demonstration with the intended loudspeakers is strongly recommended.
Stereo or Bridged Mono?
Choose Stereo Mode When
- One AMP-F10 will power both loudspeakers
- 200W into 8 ohms provides sufficient output
- 320W into 4 ohms provides sufficient output
- A simpler and more compact system is preferred
- The loudspeakers present a particularly low impedance
- The cost of a second amplifier is better spent elsewhere
Consider Bridged Mono When
- One AMP-F10 will be used for each loudspeaker
- The loudspeakers have suitable impedance and power handling
- A large room requires greater dynamic headroom
- The system uses inefficient high-performance loudspeakers
- Greater physical channel separation is beneficial
- The wider system justifies the additional amplification
AMP-F10 or an Integrated Amplifier?
Choose the AMP-F10 When
- You already own a suitable pre-amplifier
- You use a streamer or DAC with safe variable outputs
- Your loudspeakers require substantial current and control
- You want the option of bridged mono operation
- You prefer to upgrade the pre-amplifier separately
- Balanced XLR connectivity is required
Choose an Integrated Amplifier When
- You need source selection and volume control in one component
- You want to connect several analogue sources directly
- A smaller and simpler system is preferable
- You do not require the AMP-F10's power output
- You want a built-in phono stage, DAC or streaming platform
- You do not already own a suitable pre-amplifier
Ideal Partner for an Eversolo Pre-Amplifier
The AMP-F10 was developed as a natural partner for Eversolo products with variable analogue outputs.
The Eversolo DMP-A10 is particularly well matched, combining high-resolution network streaming, digital-to-analogue conversion and fully balanced analogue pre-amplification.
The Eversolo DMP-A6 Master Edition Gen 2 and Eversolo DMP-A6 Gen 2 can also operate with variable balanced or unbalanced outputs.
Check Variable Output Before Connecting
A streamer or DAC must be configured for variable output before it is connected directly to the AMP-F10.
Fixed-level output can send the full source level to the amplifier and produce an extremely high listening volume.
Connection Guidance
- Connect the AMP-F10 only to a source with suitable analogue pre-amplifier outputs.
- Confirm that the source is operating at a safe variable volume before direct connection.
- Use XLR where both components provide correctly configured balanced connections.
- Use RCA where the source does not provide a suitable balanced output.
- Set both channel input switches to the connection type being used.
- Begin with 23dB gain when the source provides a strong output voltage.
- Use 29dB gain only where the source or system requires greater voltage gain.
- Power off the amplifier before changing gain, input or stereo and bridge settings.
- Check loudspeaker polarity carefully in stereo mode.
- Follow the separate bridge-mode speaker wiring when using the amplifier as a monoblock.
- Confirm loudspeaker impedance and power handling before using bridge mode.
- Use suitably specified loudspeaker cable and secure the terminals firmly.
- Connect a compatible trigger cable where automatic power synchronisation is required.
- Check the underside mains-voltage selector before connecting power.
- Provide generous ventilation around the heatsinks.
Installation and Placement
The AMP-F10 weighs 18kg and measures 430mm wide, 310mm deep and 147mm high, including its feet.
Allow additional space behind the amplifier for XLR or RCA interconnects, loudspeaker cables, trigger connections and the mains cable.
The equipment shelf must support the amplifier's weight without flexing and provide unrestricted airflow around the side heatsinks.
Do not lift the amplifier by its heatsink fins. Support the chassis securely from underneath when moving it.
Finish
Black
The AMP-F10 is finished in black with angular side heatsinks, two illuminated analogue meters and a central standby control.
Its 430mm width gives it a traditional full-size Hi-Fi appearance and visually matches the Eversolo DMP-A10.
Eversolo Products and Audio T Amplifier Guides
These Audio T links provide useful product comparisons and further guidance on building a pre and power amplifier system.
Key Features
- High-current stereo power amplifier
- Class AB operation with Class A bias
- 200W RMS per channel into 8 ohms
- 320W RMS per channel into 4 ohms
- 450W RMS per channel into 2 ohms
- 650W RMS into 8 ohms in bridge mode
- 950W RMS into 4 ohms in bridge mode
- Stereo and bridged mono operation
- Independent left and right amplifier channels
- Five pairs of matched MOSFETs per channel
- High-capacity dual-channel linear power supply
- Advanced AC mains DC filtering
- Dual-differential amplifier circuit
- Symmetrical circuit layout
- Negative-feedback technology
- THD and noise of 0.008% at 1kHz
- Signal-to-noise ratio of at least 113dB
- Damping factor greater than 600
- Frequency response from 10Hz to 30kHz
- Channel crosstalk of -95dB or better
- Balanced XLR input for each channel
- Unbalanced RCA input for each channel
- Independent XLR and RCA input selectors
- Selectable 23dB gain
- Selectable 29dB gain
- Heavy-duty loudspeaker terminals
- Two illuminated analogue meters
- Bi-colour standby indicator
- 5V to 12V trigger input
- Trigger output for a second amplifier
- Signal-sensing automatic standby
- Automatic activation when a signal is detected
- Overcurrent protection
- Overheat protection
- Short-circuit protection
- Large side-mounted heatsinks
- Selectable 115V or 230V mains operation
- Maximum specified power requirement of 1200W
- Full-width 430mm chassis
- 18kg net weight
- Black finish
Frequently Asked Questions
What is the Eversolo AMP-F10?
It is a high-current Class AB stereo power amplifier with Class A bias and optional bridged mono operation.
Is it an integrated amplifier?
No. It has no source selector or volume control and requires a suitable pre-amplifier or source with safe variable analogue outputs.
Does it contain a DAC or music streamer?
No. It accepts analogue XLR or RCA signals only.
Can I connect a turntable directly?
No. A turntable requires a suitable phono stage and pre-amplifier with volume control.
Can I connect a CD player directly?
Only when the CD player provides a safe variable analogue output. Most CD players use fixed-level outputs and therefore require a pre-amplifier.
Can I connect an Eversolo streamer directly?
Yes, provided the Eversolo has variable analogue outputs and is configured at a safe volume before the AMP-F10 is powered on.
How much power does it produce into 8 ohms?
It delivers 200W RMS per channel in stereo mode or 650W RMS in bridged mono mode.
How much power does it produce into 4 ohms?
It delivers 320W RMS per channel in stereo mode or 950W RMS in bridged mono mode.
Can it drive a 2-ohm loudspeaker load?
The official stereo specification includes 450W RMS per channel into 2 ohms. Loudspeaker suitability and ventilation should still be checked carefully.
Can it drive two loudspeakers in bridge mode?
No. One bridged AMP-F10 powers one loudspeaker. A stereo pair requires two amplifiers.
How are the speaker terminals connected in bridge mode?
The loudspeaker connects across the two red terminals. Follow the markings and manual carefully because the black terminals are not used.
Can I change to bridge mode while the amplifier is on?
No. Power the amplifier off and disconnect the loudspeakers before changing the mode.
Does bridge mode work with every loudspeaker?
No. Loudspeaker impedance and power handling must be suitable for the AMP-F10's very high bridged output.
Does it have balanced inputs?
Yes. One balanced XLR input is provided for each channel.
Does it have RCA inputs?
Yes. One unbalanced RCA input is provided for each channel.
Can I connect XLR and RCA sources at the same time?
The sockets can remain physically connected, but only the input selected by the rear switch is active. Feeding both simultaneously is not recommended.
What are the gain settings?
The AMP-F10 provides selectable 23dB and 29dB gain.
Which gain setting should I use?
Use the setting that gives the best balance of volume range, available output and background noise with the connected pre-amplifier and loudspeakers. The 23dB setting is a sensible starting point with a high-output source.
Does the gain setting change the maximum power?
No. It changes the input voltage required to reach the maximum rated power.
What is the input impedance?
Both the XLR and RCA inputs are specified at 10k ohms.
Does it have a subwoofer output?
No. A subwoofer should connect to a suitable pre-amplifier, streamer or system controller.
Does it have a headphone output?
No.
Does it have remote volume control?
No. Volume is controlled by the connected pre-amplifier or variable-output source.
Does it support trigger control?
Yes. The trigger input accepts a compatible signal between 5V and 12V.
What is the trigger output used for?
It can synchronise a second AMP-F10, particularly when two amplifiers are being used in bridged mono mode.
Does it have automatic standby?
Yes. In signal-sensing mode it enters standby after approximately 20 minutes without a usable audio signal.
Will it switch back on automatically?
Yes. It should reactivate when an audio signal or volume increase is detected.
What do the front-panel light colours mean?
White indicates normal operation and orange indicates standby.
What protection systems are included?
It includes protection against overcurrent, overheating and short circuits.
Does the amplifier become hot?
Class AB amplification with Class A bias produces heat during normal use. Allow generous ventilation around the side heatsinks.
Can it be placed inside a closed cabinet?
No. A closed cabinet can restrict cooling and increase the risk of thermal shutdown or long-term damage.
Does it include mains DC filtering?
Yes. A DC filtering circuit is used to reduce low-frequency mains interference before it reaches the main audio power supply.
What mains voltage should be selected in the UK?
UK operation normally requires the 230V setting. Check the underside selector before connecting the amplifier to the mains.
How heavy is the AMP-F10?
Its net weight is approximately 18kg.
What are its dimensions?
It measures 430mm wide, 310mm deep and 147mm high, including its feet.
Is it a suitable partner for the Eversolo DMP-A10?
Yes. The DMP-A10 provides streaming, DAC and balanced pre-amplifier functions, while the AMP-F10 provides the speaker-level power.
Why Buy From Audio T?
- Demonstrations with suitable pre-amplifiers and loudspeakers
- Advice on whether a separate power amplifier suits your system
- Loudspeaker impedance and sensitivity matching
- Stereo and bridged mono system demonstrations
- Balanced XLR and unbalanced RCA connection guidance
- 23dB and 29dB gain-setting advice
- Streamer and DAC pre-amplifier configuration
- Safe fixed and variable output setup
- Trigger and signal-sensing standby assistance
- Loudspeaker cable and interconnect matching
- Equipment-rack and ventilation advice
- Mains-voltage selector checks
- Direct comparison with suitable integrated amplifiers
- Home demonstrations may be available
- Part exchange available on suitable existing equipment
- Ongoing system and setup support
Contact your local Audio T store to arrange a demonstration or discuss adding the Eversolo AMP-F10 to your Hi-Fi system.