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Atoll Electronique SDA300 Signature
STREAMER / DAC / INTEGRATED AMPLIFIER
The SDA300 Signature is designed to reproduce the integrity and complexity of musical textures with great fluidity. It offers free access to online radio stations and lets you play live, in high definition, on the main streaming platforms. It is open to your entire network and has very complete connectivity. It converts the digital signal to reproduce your audio files with striking realism. As an all-in-one concept, it goes even further by functioning as a complete music player and integrated amplifier, using the amplifier section of the IN300.
- 8 mm brushed aluminium front panel.
- 2 toroidal transformers of 440 VA each (audio) + 2×4.5 VA + 3.2 VA.
- Total of capacitors: 65 800 µF.
- 2×150 Wrms / 8Ω.
- MOS-FET double push-pull power stage.
- High-quality, MKP technology link capacitors, shielded in a metal box.
- Filter capacitors: 8×6800 μF, high-quality, low ESR, designed
explicitly for ATOLL. - BURR BROWN PCM1792A converter:
– Dynamic: 129 dB.
– Signal/Noise ratio: 129 dB. - 5″ TFT LED colour graphic display (800*480).
- Discrete component audio stages without negative feedback in pure Class A.
- Analog volume management (switched resistors) that can be bypassed.
- Specific power supply dedicated to the audio stages.
- Specific power supply dedicated to the analogue digital audio converter.
- Accepted resolutions: PCM up to 24 bits/192 kHz and DSD64 and DSD128.
- Playback of audio files present on the network (DLNA and UPnP compatible) in a wired RJ45 or Wi-Fi connection.
- Display of names, tags, resolutions and album covers.
- “Gapless” system (no cut between pieces).
- Possibility to create playlists.
- USB-A file systems: FAT32, NTFS, EXT2/3/4.
- ATOLL “streamer” remote control supplied as standard.
- ATOLL Signature 2” App (Android and IOS).
CONNECTIVITY
Inputs
2 Analog Inputs – 2 coaxial S/PDIF (24 bits/192 kHz PCM).
2 Toslink optical S/PDIF inputs (24 bits/192 kHz PCM).
2 USB-A inputs (1 front and 1 rear).
1 RJ45 network socket.
1 Bluetooth® receiver (antenna).
Outputs
Speakers.
1 Pre-out output.
1 Coaxial S/PDIF output.
1 S/PDIF optical Toslink.
1 Trigger output (12V).
1 Headphone output on the front panel (Ø 6,35 mm – 1/4″).
1 Wi-Fi antenna (802.11b/g/n).
The SDA300 Signature offers excellent control with Apple or Android apps, or the included remote control.
The stylish 5″ TFT colour display gives the user the correct information about the device’s functions and shows cover art
and song details.
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Atoll Electronique SDA300 Signature — streaming integrated with authority
The SDA300 Signature pairs substantial muscularity with refined resolution, offering commanding bass control and quick, articulate timing. The Ear Editor found it able to drive low-impedance speakers with ease (280W/4Ω) while delivering a pinpoint imaging and wide soundstage. Its Burr‑Brown PCM1792A DAC, extensive streaming services (Qobuz, Tidal, Spotify, Highresaudio) and twin USB ports make it a versatile all‑in‑one for modern systems. Build and engineering are reassuringly premium — French assembly, a large PSU and generous capacitance underpin the clean, dynamic delivery. Ideal for listeners who want a single component that combines punch, clear midrange detail and user-friendly streaming. Given its measured strengths and competitive positioning, the SDA300 Signature represents a compelling value for buyers seeking high-performance integrated streaming amplification.
Pros
- Muscular, controlled dynamics and ability to drive low-impedance speakers (280W/4Ω) without strain, delivering tight, impactful bass.
- Exceptional midrange and treble detail with wide, well-defined soundstage and pinpoint imaging that increases musical engagement.
- Well-featured streaming/full-format playback and a proven Burr‑Brown PCM1792A DAC combined with robust French build and generous power supply components.
&
Cons
- No Apple AirPlay support at present (Atoll is reportedly working on a software update).
Sound Quality
92/100
Dynamics
92/100
The amp's double push-pull MOSFET stage (150W/8Ω, 280W/4Ω) and large PSU enable strong dynamic performance: reviewers described an 'immense sense of control', 'remained dynamic and forceful' and timing that is 'spot-on.' It handles low-impedance loads and large crescendos without strain, justifying an excellent dynamics score for its Class AB powerband.
Soundstage Imaging
91/100
The reviewer reports 'pinpoint imaging across an immense soundstage' and a presentation that is 'wider and deeper' than the previous model, indicating excellent channel separation and stable, convincing imaging. The combination of detail and timing helps form a vivid, holographic soundstage.
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Build Quality
92/100
Physical specs (892.2 VA PSU, 65,800 µF total capacitance, 19 kg) and review comments ('superbly engineered, well built (in France)') point to robust engineering and high-quality assembly. Atoll's in-house final testing and assembly further support reliability and premium construction.
Features Connectivity
89/100
The unit includes a Burr-Brown PCM1792A DAC, high-definition streaming (Qobuz, Tidal, Deezer, Spotify, Highresaudio) and twin USB ports (front and rear) for NAS/thumb drives — a strong modern feature set. No phono, balanced I/O, or AirPlay were mentioned, so score reflects a well-featured but not exhaustive connectivity package.
Value for Money
90/100
At the listed price (~€7,499) reviewers call the price 'competitive' and state 'there's a lot for the money' and that similar performance would cost considerably more if built from separate components. Positive reviewer sentiment about performance-to-price justifies a 'worth it/competitive' value rating.
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