Atoll Electronique ST300 Signature
The ST300 Signature brings lively microdynamics and a wide, focused soundstage to network streaming, creating an immersive presentation without aggressive edges. The Hans Beekhuyzen also found its flexible Roon, DLNA and streaming-service support, analogue volume control, and extensive inputs unusually accomplished. With robust discrete circuitry and balanced outputs, it is a compelling high-end hub for digital and analogue systems.
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Nicely Roasted
Sound Quality
88/100
Build Quality
91/100
Features Usability
90/100
Value for Money
93/100
Pros
Exceptional microdynamic expression delivers a lively, engaging sound without aggression.
Wide, deep stereo imaging with strong focus creates an immersive soundstage beyond expectations for the class.
Extensive connectivity includes XLR and RCA outputs, analogue inputs, four digital inputs, digital outputs, and 12V trigger functionality.
Above-average construction combines a sturdy chassis, 10mm aluminium fascia, triple transformers, and discrete balanced analogue stages.
Cons
Fine-detail resolution is good for its class rather than a standout strength, with spaciousness drawing more attention than ultimate retrieval.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 88/100
The ST300 Signature is described as a lively yet non-aggressive streamer/DAC with unusually strong microdynamics and a spacious, focused stereo image. Its presentation is said to feel more immersive and more expansive than expected at the price, although ultimate resolution is described as good rather than exceptional.
Tonal Balance Musicality
91/100
The reviewer found the sound notably lively because of its microdynamic ability, but specifically said this liveliness does not turn aggressive. That combination suggests an engaging, easy-to-enjoy presentation with convincing musical momentum rather than an overtly sharp or fatiguing balance.
Resolution Detail
85/100
Resolution is described as appropriate for a €3,000 streaming DAC, while the player’s spaciousness can somewhat overshadow its finer-detail retrieval. Wide and deep imaging with good focus should help reveal layering and placement, but the review stops short of claiming class-leading low-level resolution.
Digital Performance
88/100
The ST300 Signature uses dual Burr-Brown PCM1792 DACs and supports PCM up to 24-bit/192kHz alongside DSD64 and DSD128. In listening, its microdynamics and imaging were considered closer to substantially pricier streaming DACs, indicating a clean and capable overall digital-to-analogue implementation.
FEATURES USABILITY PERFORMANCE 90/100
This is a versatile network source with strong app support, major streaming-service compatibility, DLNA and Roon Endpoint operation, plus extensive analogue and digital connectivity. It can serve as a straightforward streamer/DAC or as a flexible hub for legacy digital sources and a power amplifier.
Streaming Software
89/100
The Atoll Signature 2 app is specifically described as very good, and the player supports popular streaming services, DLNA and Roon Endpoint use. The reviewer also highlights practical multi-user flexibility, allowing Roon playback while another household member uses Spotify on the same unit.
Features Connectivity
94/100
Connectivity is particularly comprehensive: balanced XLR and RCA analogue outputs, two analogue inputs, four digital inputs, digital outputs and a 12V trigger are all included. Variable analogue volume control enables direct connection to a power amplifier, while S/PDIF and optical inputs give an existing CD player access to the Atoll DAC.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
91/100
The reviewer describes a sturdy chassis, a 10mm aluminium front panel and a substantial metal cover. Build and electronic execution are both considered above average, with triple transformers, a large capacitor bank and discrete balanced analogue stages singled out as meaningful construction strengths.
Value for Money
93/100
At €3,000, the reviewer considers the ST300 Signature to sound more expensive than it costs. Its microdynamics and stereo imaging are compared favourably with streaming DACs in the €4,000–€5,000 region, making it a notably compelling option among similarly priced network players.
Reviews & Sources
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Specifications
- Power supply
- 30 VA + 2×10 VA (audio)
- Total of capacitors
- 69 000 µF
- Output stages
- 4 discrete component stages biased in class A with no feedback
- Dynamic
- 132 dB
- Signal/Noise ratio
- 132 dB
- Output impedance
- 5,6 Ω
- Maximum input level
- 3,5 Vrms
- Output level
- 2,0 Vrms
- Distortion at 1 kHz
- 0,0004 %
- Bandwidth
- 5 Hz – 20 kHz
- Rising time
- 1,5 µs
- Digital/analogue converter
- 2×BURR-BROWN \n 24 bits/192 kHz
- Dimensions
- 440×284×95 mm
- Weight
- 7 Kg
Manufacturer's Description — Atoll Electronique
STREAMER / DAC
Whether it’s listening to music in high definition streaming, locally from your network, from a USB key, a hard drive, via Bluetooth®,
or your favourite internet radios, our ST300 Signature network player is adapted to the current needs related to the reading of dematerialized music files. It embeds a high-performance converter and can be used as a pure source or preamplifier.
- 8 mm brushed aluminium front.
- 1×30 VA linear transformer + 2×10 VA low-noise toroidal transformers (audio).
- Total of capacitors: 69 000 µF.
- ESA series CLARITY CAP audio MKP link capacitors.
- Double converter BURR-BROWN PCM1792A:
– Dynamic: 132 dB.
– Signal/Noise ratio: 132 dB. - 5″ TFT LED colour graphic display (800*480).
- Discrete component audio stages without negative feedback in pure Class A.
- Analogue volume management (switched resistors) that can be bypassed.
- Specific power supply dedicated to the audio stages.
- Specific power supply dedicated to the analog-digital audio converter.
- Resolutions: PCM up to 24 bits/192 kHz and DSD64 and DSD128.
- Playback of audio files is supported on the network (DLNA and UPnP compatible) via wired RJ45 or WiFi connections.
- Display of names, tags, resolutions, and album covers.
- “Gapless” system (no cut between pieces).
- Ability 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).
The user can use simultaneously the XLR output and the RCA output of the ST300.
CONNECTIVITY
Audio inputs
2 Stereo line inputs
4 Digital inputs: 2 Coaxial, 2 Optical Toslink
1 Bluetooth®
2 USB-A inputs:1 front, 1 rear
Audio outputs
1 Stereo line RCA output
1 Stereo line XLR output
2 Digital outputs: 1 Coaxial, 1 Optical Toslink
Various
1 RJ45 input (network).
1 Trigger output (12V).
1 WIFI antenna.
1 Bluetooth® antenna.
Verified Dealers
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Authorized dealers for Atoll Electronique ST300 Signature
- A Tube High Fidelity — online and in-store — Almere, Flevoland, Netherlands (website)
- Absolute Audio - Canada — in-store — Calgary, Alberta, Canada (website)
- Akustik Strauss — in-store — Garmisch-Partenkirchen, Bayern, Germany (website)
- Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
- AM Audio Design — in-store — Beauvais, Hauts-de-France, France (website)
- Ambiance Concert — in-store — Angers, Pays de la Loire, France (website)
- Ars Antiqua Audio — online and in-store — Boadilla del Monte, Comunidad de Madrid, Spain (website)
- Art Sonique — France (website)
- Audio Alternative — online and in-store — Fort Collins, Colorado, United States (website)
- Audio Ark — online and in-store — Edmonton, Alberta, United States (website)
and 85 more verified dealers