Soulnote D-1 v2 DAC
Soulnote D-1 v2 with the ES9038PRO chip, boasting a simple yet powerful current-output design with no unnecessary functions, is employed independently for left and right channels.
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• Optimized Analog Circuit
For the analog stage, the “New Type-R” (*) circuit is originally developed for E-3, has been implemented and optimized for DAC. The power supply also incorporates the same non-NFB regulator circuits used in higher-end models.
• ES9038PRO
The ES9038PRO, boasting a simple yet powerful current-
output design with no unnecessary functions, is employed independently for left and right channels. Naturally, SOULNOTE’s proprietary NOS (non-oversampling) mode is also available.
• Eliminating the Analog Low-Pass Filter (LPF)
The inherently organic and vibrant music reproduction that NOS was originally intended to deliver
have been achieved. This effect is equally effective during DSD playback. • Resistor-based I/V Design
For richly musical sound, the I/V conversion circuit—an element of critical importance—employs the same resistor-based I/V design used in higher-end models.
• A large, non-impregnated Toroidal Transformer
In combination with the non-NFB power supply, the toroidal transformer enables passionate, class-defying music playback.
SOULNOTE's design philosophy
Through his long career as a designer of audio equipment both in analogue and digital areas, Kato had been struggling to find out the reason why the improvement in static performance and the sound quality in playback did not always correspond.
Kato made a hypothesis about a counter-concept which he called dynamic performance.
The adoption of the NOS (non-oversampling) mode for PCM playback in digital-to-analogue conversion as well as a non-NFB (without negative feedback) circuit in amplifiers come from this hypothesis. Indeed, these worsen the measurement result in static performance, but a remarkable improvement can be recognised in dynamic one.
SOULNOTE believes dynamic performance while keeping accuracy of the original waveform on the time axis as the most important for music playback, which is, however, still unmeasurable by any of the conventional methods.
At SOULNOTE, only listening dominates the determination and improvement of circuit, selection of parts and mechanical construction. This approach is a kind of antithesis against the supremacy of static performance.
Input formal:
- USB: PCM, DSD (DoP v1.1, ASIO)
- Coaxial・AES/EBU: PCM, DSD (DoP v1.1)
Supported Sampling Frequencies:
- USB: Max. 768 kHz (PCM) / Max. 22.6 MHz (DSD)
- Coaxial・AES/EBU: Max. 192 kHz (PCM) / Max. 2.8 MHz (DSD64 DoP v1.1)
PCM quantization bit rate:
- USB: 16-bit, 24-bit, 32-bit
- Coaxial・AES/EBU: 16-bit, 24-bit
USB Profile: USB 2.0, USB Audio 2.0
Digital Input: USB (Type B), Coaxial x2(S/PDIF), AES/EBU
Analog Output: BALANCED x1, UNBALANCED x1
Analog Output level: BALANCED: 5.8 Vrms, UNBALANCED: 2.9 Vrms
Frequency characteristic: 2 Hz to 120 kHz (+0/-1 dB)
S/N: 110 dB
Total harmonic distortion: 0.08%
Analog filter: 1st-dimentional passive
Power voltage: 230V AC 50Hz
Power consumption: 20W
Dimensions: 430 (W) × 109 (H) × 379 (D) mm
Weight: 10.0 kg
Included accessories: Spikes, power cable
