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Atoll Electronique IN300 Evolution
The IN300 Evolution integrated amplifier features reworked power supplies, improved audio performance, and a low-power mode. DAC boards are now optional.
- 8 mm brushed aluminium front panel, micro-blasted and anodised, with high-precision engraving.
- 2 x 150 Wrms / 8Ω.
- 1.5mm thick steel chassis.
- Two 440 VA toroidal transformers for the audio stages plus 10 VA for the digital stages.
- Soft start stage to avoid power surges.
- High-end ABSOLUE CREATIONS internal wiring on the power supply side.
- Filter capacitors: 12 x 6800 μF high-quality capacitors with a low ESR specifically designed for ATOLL.
- High-quality, shielded MKP coupling capacitors.
- Bipolar transistor and LED current sources to ensure perfect voltage stability.
- Triple push-pull MOS-FET power stage.
- Polarisation of the output stages in class A/B.
- Possibility of choosing standby mode: Low consumption or preheating.
- 2 volume attenuators: 1 per channel to maintain the dual mono architecture.
- Possibility to manage balance and memorise it.
- Possibility to rename the inputs.
- High contrast OLED display (on or off mode after 5 seconds of inactivity).
- Double-sided printed circuits with nickel/gold finish.
- ATOLL global remote control supplied as standard.
- The IN300 EVO can receive the following optional boards:
– DAC boards: DA100 and DA200.
– PHONO boards: P50 and P100 (can be combined with DAC boards).
- Specific copper speaker output connectors specially manufactured for ATOLL.
- Internal wiring of the speaker outputs with high-end cable.
- Output connectors (RCA) gold-plated.
CONNECTIVITY
Analog Inputs
5 Line Inputs (including 1 AUX input for optional PHONO board).
1 BY-PASS Input.
1 XLR Input.
Outputs
1 Pair of Speaker Outputs.
2 Pre-Out Outputs.
1 Ø 6.35 mm headphone jack output.
1 12V Trigger Output.
Various
Optional DA100 and DA200 digital boards can be added.
View the standard for XLR connector wiring.
Our balanced MOS-FET amplifier circuits offer excellent harmonic gradients and have no memory effect. Every moment, the current is immediately delivered to your speakers. This is one of the secrets of the musicality that ATOLL amplifiers enjoy.
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Atoll Electronique IN300 Evolution — muscular, refined integrated amplifier
The IN300 Evolution makes its case with a dual-mono topology and abundant headroom, delivering powerful dynamics and immediate impulse response. Reviewers from Ansgar Hatscher and Carlo Lo Raso highlight its tight control, punchy bass and an agile, musical presentation; Chris Frankland notes the hand-assembled build and high-quality parts that underpin long-term reliability. The AKM-based internal DAC and versatile inputs (USB, coax/optical, Bluetooth, XLR, bypass) make the IN300 Evolution a flexible hub for digital and analog sources, while a neutral-yet-warming midrange and smooth treble suit both vinyl and streamed music. With robust construction, serious power (150W/8Ω, 260W/4Ω) and wide bandwidth, it’s a compelling choice for listeners seeking punch, clarity and value in a single chassis.
Pros
- Exceptional dynamic headroom and slam — drives demanding speakers with effortless control and high volume capability.
- Robust, hand-assembled construction with large toroidal transformers and bespoke filter capacitors yields a solid, low-noise platform.
- Musical, slightly warm-leaning signature: punchy bass, smooth treble and a lush midrange that keeps vocals engaging.
- Comprehensive connectivity and useful features — internal AKM DAC, USB, optical/coax, Bluetooth, balanced XLR and bypass for HT use.
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Cons
- Headphone output can sound compressed and bass-heavy compared with dedicated head‑amps — not the amp’s strong suit for critical headphone listening.
- Internal AKM DAC is capable and convenient but less refined than higher-end external DACs; audiophiles may prefer an outboard converter for the last degree of transparency.
- Missing some modern conveniences (HDMI ARC, additional XLR pre-outs) that some users expect for home‑theatre or AV integration.
Sound Quality
90/100
Dynamics
92/100
Spec'd at 150 W/8Ω and 260 W/4Ω with dual large toroidal transformers and substantial capacitance, and both reviewers note abundant energy and effortless headroom. HomeTheaterHifi observed 'unshakable power delivery' and tight control at higher volumes; Fidelity praises fast impulses and the amp driving the room to its limits. The combination of measured power and reviewer testimony supports excellent dynamic performance and slam.
Soundstage Imaging
88/100
Reviewers report a liquid-smooth, enveloping presentation with an exceptionally quiet background (HomeTheaterHifi) and an authentic, well-spaced soundstage (Fidelity). Fidelity notes a competing external DAC produced a slightly larger stage but not a more musical one, indicating very good imaging and placement even if not the absolute largest soundstage. Overall imaging is precise, stable and engaging.
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Build Quality
90/100
Both reviews emphasize robust construction: heavy toroidal transformers, specially manufactured filter capacitors, dense chassis feel and 'built like a tank' finish. The internal layout and component choices are repeatedly praised, supporting a high-level build-quality assessment and reliable thermal/power design for this class.
Features Connectivity
91/100
The IN300 offers a well-equipped set: five RCA inputs, an XLR input, a bypass input, an internal AKM AK4490 DAC supporting Hi-Res DSD/PCM and multiple digital inputs, plus a capable headphone amplifier that drives 250 Ω headphones. That combination (balanced input, internal DAC, bypass, digital inputs and strong headphone drive) places it in the fully-featured range for an integrated amp.
Value for Money
90/100
At the listed price (~€4,000) both reviewers call the IN300 'remarkably worthy of the price' and praise its combination of build, features and musical performance. The consensus is that it justifies its premium — strong construction and sonic performance support a 'worth it' conclusion in its competitive segment.
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