Features

Stereo Class G Amplifier: Class G amplification implements multiple power supplies rather than just a single supply. If a dynamic signal is received that goes beyond the capability of the first power supply, the secondary supply is gradually brought in up to full rated power output as required. This gives a very efficient design as additional power is only used when required. Modern high speed silicon allows ARCAM to make this switch faster than would ever be required, even way beyond the audio bandwidth, so there is no lag in power. The first power supply is of lower power and within this region runs in pure Class A, which has no crossover distortion. As the secondary supply is only used when required, extreme levels of power are possible because very little energy is wasted in the amplifier as heat when it is not being used. Without control this power would be ill-used, so multiple output devices within the amplifier keep a tight grip on the loudspeaker at all times, ensuring your listening experience never lacks dynamics and detail.

• 8-Ohm Rated: 100 watts x 2 channels driven @ 20-20kHz with 0.5% THD
• 4-Ohm Rated: 165 watts 2 channels driven @ 1kHz with 0.5% THD

ESS Sabre ES9280A PRO DAC: The ARCAM A25 integrated amplifier utilizes an ESS Sabre ES9280A PRO DAC (digital-to-analog converter) with PLL (phase-locked loop) for reproduction of high quality, high resolution music files including 2ch stereo PCM audio up to 32-bit/384kHz, as well as DSD audio up to 45MHz). You can also select from multiple DAC filters to better shape the sound of your digital music library.

Bluetooth 5.2 with aptX Adaptive: The ARCAM A25 integrated amplifier is equipped with built-in Bluetooth 5.2 for wireless communication between Bluetooth-enabled audio source devices and headphones. The ARCAM A25 can act as a Bluetooth receiver in order to wirelessly stream music from an audio device, or a Bluetooth transmitter in order to wirelessly stream music to a set of BT-enabled headphones. In addition to Bluetooth's standard SBC audio codec and Apple's AAC codec, the A25 supports Qualcomm's aptX Adaptive audio codec for higher quality wireless audio steaming (up to 23-bit) with low-latency from aptX Adaptive compatible source devices (such as many Android smartphones & tablets). The A25 can be paired to multiple Bluetooth devices (up to 5) using Secure Simple Pairing (SSP), but only one device can be connected and used for playback at a time.

• Receiver Mode: In Receiver mode, you'll be able to wirelessly stream stored music, music apps, and other audio content from your Bluetooth-enabled source device (such as your smartphone, tablet, computer, or laptop) to the ARCAM integrated amplifier. You'll also be able to control basic playback functions (Play/Pause & Previous/Next Track) using the included remote control. Advanced music operation will still need to be handled from your Bluetooth-enable device. There is no song/artist information display on the front-panel of the integrated amp. The unit can even be setup to automatically switch to the Bluetooth source input when a connected Bluetooth source devices starts streaming audio.
• Transmitter Mode: In Transmitter mode, you can stream the A25's non-Bluetooth audio sources (Analog, Digital, USB) out to a Bluetooth-enabled set of headphones. You can even setup the ARCAM integrated amp to output the same audio source to both the unit's speaker outputs and connected Bluetooth headphone simultaneously (with little noticeable delay). Volume control of your Bluetooth headphones will be controlled via the Bluetooth device and not the ARCAM amp.

USB-C Port: The ARCAM A25 integrated amplifier is equipped with a USB-C port that allows connection to our Windows PC or Mac computer for playback of Hi-Res digital music files stored on your compatible laptop or desktop computer. The A25 supports 2ch stereo PCM audio up to 32-bit/384kHz, as well as DSD audio up to 45MHz. The ARCAM A25 supports Windows PC running Windows 10 or 11, as well as Mac running MacOS 11, 12, 13, and 14.

Optical & Coaxial Digital Inputs: The ARCAM A25 integrated amp is equipped with a total of 3 digital audio inputs. There is 1 optical (Toslink) digital input and 2 coaxial (SPDIF) digital inputs for connection of a CD player, TV, or Blu-ray/DVD player. The optical & coaxial digital inputs support 2ch stereo PCM audio up to 24-bit/192kHz. The digital audio inputs do not support Dolby Digital, DTS, or other multichannel surround formats.

Line-Level & Phono Analog Inputs: The ARCAM A25 integrated amplifier is outfitted with a total of 4 analog audio inputs. There are 3 line-level analog inputs and 1 Phono MM input. The 3 line-level analog inputs allow connection of a CD player, tape deck, and/or network streamer. The Phono MM input allows connection of a turntable with a MM (moving magnet) cartridge.

Processor Mode (HT Bypass): Processor mode will fix the volume for one of the A25's line-level analog inputs. This allows the ARCAM integrated amplifier to be used in conjunction with an AV receiver in a combined home theater and two channel system. You can set a fixed volume to match the other speakers connected to the integrated amplifier or AV receiver using the " Processor Volume" setting.

Binding Post Speaker Outputs: The ARCAM A25 features a total of 4 binding post speaker output terminals for connection of a single pair of 8-ohm or 4-ohm loudspeakers. The binding post terminals support bare wire (up to 12AWG), pin-connectors, spade-lugs, and banana plugs (single only). You can balance between the Right & Left speaker output channels.

Stereo Preout: The ARCAM A25 is outfitted with a full-range stereo RCA preout that can be used to connect an external high power amplifier or powered subwoofer. If connecting a powered sub, your subwoofer will need its own built-in low pass crossover filter. The integrated amp's stereo RCA preouts and speaker outputs are live at the same time.

3.5mm Headphone Jack: The ARCAM A25 integrated amp features a front-panel 3.5mm (1/8") headphone out jack for connecting a set of headphones. By default, A25 integrated amp's speaker outputs and preamp outputs are muted when the headphones are plugged in. However, the speaker and pre-amp outputs can be configured to remain active when headphones are connected using the "Headphone Override" function in the setup menu.

Front-Panel Display & Controls: The ARCAM A25 integrated amplifier features a front-panel display which indicates Source Input, Volume Level, and Menu Options. You can adjust the brightness level of the front-panel display. There are also two 3-way rotary knobs on the front-panel that operate Source Selection, Source Renaming, Volume Up/Down, Mute, and Power On/Off. In addition, there is a Main Power On/Off switch on the rear-panel of the A25.

Remote Control: The included IR remote control provides wireless operation of the ARCAM A25 integrated amplifier. Wireless remote control functions include Power On/Off, Volume Up/Down, Mute, Play/Pause, Previous/Next Track, Menu Navigation, and Display Brightness. The ARCAM amp also features an IR input and Control Port.

• IR Input: The 3.5mm IR input can be used to connect an IR repeater system, so you can continue to operate the amplifier remotely via IR even if its located inside an AV cabinet.
• Control Port: The rear-panel RJ45 Control Port allows for the ARCAM A25 to synchronize with, and control an ARCAM ST5 network player. When streaming, it allows for the combination of the integrated amp and network player to act as one, so you can enjoy the benefits of component devices with the convenience of an all-in-one.

Detachable AC Power Cord: The ARCAM A25 comes with a detachable 68" AC power cord (IEC 2-prong) that plugs into the back of the integrated amplifier and into an AC power outlet or surge protector/line-conditioner (sold separately). The A25 also offers an Auto Standby mode and Trigger In/Out.

• Auto Standby: The ARCAM A25 integrated amplifier is designed to enter standby mode automatically after 20 minutes with no audio playback and no operation.
• Trigger In/Out: The ARCAM A25 is equipped with a 12V Trigger In and Out (3.5mm) that can be used to connect the 12V trigger in and out of other components (such as an ARCAM CD player or network player) in order to synchronize power on/off functions.

USB-A Service Port: A rear-panel USB-A port is used for service, software, and firmware updates only.