AVAYESYMPHONY

Alpha One
STREAMING INTEGRATED AMPLIFIER

Alpha One is the result of the experience gained during the development of our Reference line and represents a synthesis of B.audio’s technological know-how. The goal was both simple and demanding: combine a cutting-edge DAC together with a high-end passively cooled dual-mono amplifier in a single enclosure. Our proprietary EX networking module is also included, offering acoustic correction and advanced streaming capabilities.

State-of-the-art digital playback

State-of-the-art digital playback

The B.audio Alpha One benefits from B.audio’s patented SJR « Source Jitter Removal » technology. By completely eliminating the jitter from any digital source, it allows the conversion circuits to work optimally, ensuring unprecedented digital-to-analog conversion quality, regardless of the digital input format. The result is a realistic, rich and lively sound. Combined with the embedded EX network module, this is the key to an unparalleled streaming music experience.

Extended bandwidth preamplification

The preamp stage of the Alpha One relies on a fully symmetrical construction, featuring a relay driven resistor network volume control for a perfect balance between the left and right channels. No coupling capacitor is mounted in the Alpha One. Operating outside the signal path, multi-pole servo circuits are used to provide a constant continuous reference to the active elements of the circuit. The integrity of the audio signal is thus fully preserved, ensuring a high level of transparency together with an extreme bandwidth extension, refined highs and extremely deep bass.

Dual-mono internal construction

The amplifier stage of the Alpha One is directly derived from our reference power amplifiers. Its in-house refined topology was designed to drastically reduce dynamic distortion. Optimizing the use of local feedback at the most critical stages, it benefits from the advantages of a class AB output stage while maintaining a perfect linearity of operation. Its dual mono design features comfortable power ratings together with a high current reserve, allowing it to drive the most demanding loudspeakers with powerful bass handling.

High quality optional phono stage

The Alpha one can be fitted with a high end phono stage which supports both moving-magnet (MM) and moving-coil (MC) cartridges.

Each internal step has been carefully engineered to deliver the highest performance, such as the low-noise input stage featuring matched-transistors and the passive RIAA correction made of 2 distinctive stages.It offers multiple settings to match any cartridge model.

Specifications

Alpha One
Power supplyFactory set: 220-230 V or 100-115 V, 50-60 Hz
Dimensions450 x 395 x 102 mm
Weight15.5 kg
Output power120 W under 8 ohm
200 W under 4 ohm
Bandwidth> 200 kHz
THD<0.001%
(1-100 W, 8 ohm)
D/A ConversionMultibit sigma-delta
DAC Clock management Patented SJR technology
Streaming protocolsUPnP, MPD, LMS, NAA, Roon, Airplay
Gapless playback
Access to streaming services (Qobuz, Tidal, Spotify, …) via compatible iOS and Android applications
Integrated music serverUPnP / Openhome
Acoustic correction64-bit DSP, 8x parametric filters with automatic gain adjustment
Inputs1x SPDIF (PCM up to 24-bit / 192 kHz)
2x Toslink (PCM up to 24-bit / 96 kHz)
1x AES/EBU (PCM up to 24-bit / 192 kHz)
1x USB type B (PCM up to 384 kHz / DXD / DoP / native DSD up to DSD256)
1x RJ45 (PCM up to 384 kHz / DXD / DoP / native DSD up to DSD256)
1x USB DATA (to connect a storage media / SSD disk)
PRE-AMPLIFICATION
Volume controlAnalog, via switched resistor network, -80 to +0 dB, 64 steps
Construction100% balanced
Inputs1x XLR (balanced)
2x RCA (unbalanced), one of which configurable as bypass (Home Theater use)
Input impedance47 kohm
Pre-out1
Tuner input1x XLR (balanced)
Output impedance100 ohm
PRE-AMPLIFICATION
ConstructionDual-mono, class AB, passive cooling (fanless)
Output stage4 high current bipolar transistors per channel
Speaker connectorsUniversal, compatible with forks, bare cables and banana plugs

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