In August we first reported on ATOLL’s new flagship integrated amplifier. Now the official press release is here, and it fills in the picture. The ATOLL IN800 Evo combines a high-end preamplifier and two power amplifiers in one chassis, delivers 350 watts per channel into 8 ohms, and can be expanded with two brand-new boards: the DA800 DAC and the P800 MM/MC phono stage. US pricing is now confirmed too.
ATOLL Électronique, the independent French manufacturer from Brécey in Normandy, calls it its new flagship integrated amplifier. After reading the full specifications, it is easy to see why.
ATOLL IN800 Evo: three components in one chassis
The project started with an ambitious idea. ATOLL wanted to fit the functionality of three separate components into a single box: a PR400 preamplifier and two AM400 power amplifiers working in mono. You can read how we first described that concept in our original IN800 Evo article.
The two AM400-derived power sections work in differential mode. This doubles the available output voltage and, in theory, allows up to four times the power of a conventional configuration. To make that work in practice, ATOLL chose relatively low supply voltages, which permits higher quiescent currents in the output stages.
350 watts and a 1,200 VA transformer
The ATOLL IN800 Evo is rated at 350 watts RMS per channel into 8 ohms and 550 watts into 4 ohms. At its heart sits a custom 1,200 VA toroidal transformer for the audio circuits. Instead of two separate main transformers, ATOLL chose one shared transformer with separate windings for left and right, to maximise energy while keeping electromagnetic disturbance low. Together with 128,000 µF of capacitance, that gives the dual-mono power supply plenty of reserve.
The transformer sits on a steel plate, isolated from the chassis by four damping mounts. Three smaller toroidal transformers (25 VA, 7 VA and 1.6 VA) feed the digital, analogue control and logic circuits separately.
Each channel uses 16 matched MOS-FET output transistors, 32 in total. The audio stages are fully balanced, with bipolar input circuitry, Darlington driver stages, LED current sources and a low-feedback design.
Carefully chosen components
ATOLL clearly paid attention to the parts list. Volume is handled by two MUSES 72323 attenuators, one per channel. Coupling and link capacitors are ClarityCap CSA MKP types, chosen after extensive listening tests. HOLOC precision resistors with tolerances down to 0.05% sit in the signal path, alongside Nichicon MUSE UES and Nippon Chemi-Con EAJ capacitors. Even the internal speaker wiring comes from Absolue Créations.
New DA800 DAC and P800 phono boards
The biggest news compared with our first report is the arrival of two optional boards. You can install one of each.
The DA800 DAC board uses dual AKM AK4497S converters and an XMOS-based asynchronous USB input with ATOLL’s own firmware. It handles PCM up to 32-bit/768 kHz and DSD64 to DSD256, and adds AES/EBU, two coaxial and two optical inputs, plus Bluetooth 5.0 with an external antenna.
The P800 phono board covers both MM and MC cartridges. It uses two Lundahl MC transformers and discrete, Class A biased stages, with 41 dB of gain for MM and three MC settings of 59, 65 and 71 dB.
Build and display
The ATOLL IN800 Evo combines a 2 mm steel chassis with a 12 mm brushed, bead-blasted and anodised aluminium front. A 6.75-inch colour TFT display (480 x 1280 pixels) runs ATOLL’s own software, with adjustable brightness, input renaming, balance with memory and a choice between low-power standby and warm-up mode. An aluminium remote control comes with every IN800 Evo.
Pricing and availability
The ATOLL IN800 Evo will be available in the United States from December 2026 through ATOLL’s exclusive US distributor, Audio Excellent. The suggested retail price is $16,000 for the line-level version. The DA800 DAC board costs $1,600 and the P800 phono board $1,200. The amplifier comes in natural Silver or anodised Black aluminium. European pricing has not been announced in this release.
Key specifications
- Power output: 2 x 350 W RMS (8 Ω), 2 x 550 W RMS (4 Ω)
- Power supply: 1,200 VA toroidal transformer, 128,000 µF
- Output stage: 32 matched MOS-FET transistors
- Bandwidth: 5 Hz – 100 kHz (-3 dB)
- Signal-to-noise ratio: 100 dB
- Inputs: 2 x XLR, 3 x RCA, tape in/out, RCA and XLR bypass
- Outputs: RCA and XLR pre-outs, 12 V trigger
- Options: DA800 DAC board ($1,600), P800 MM/MC phono board ($1,200)
- Dimensions: 443 x 440 x 147 mm
- Weight: 27 kg
- Price (US): $16,000
Would you choose the ATOLL IN800 Evo as a complete one-box system, with the DAC and phono boards installed?
