Norma HS-DA1 Digital to Analog Convertor
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The Norma HS-DA1 represents a modular approach to digital audio conversion, available in two distinct configurations to suit your system architecture. The DAC version provides comprehensive digital connectivity—USB, AES/EBU XLR, and three S/PDIF inputs with configurable CD output capability. The DAC PRE variant elevates the offering with an advanced analog preamplification stage, adding two additional analog inputs alongside the full digital complement. This flexibility allows you to tailor the converter precisely to your listening chain's requirements.
The preamplifier stage can operate both in active and passive mode: in active mode, the gain can be easily varied, even via remote control, between X and Y decibels (for active and passive mode, see the notes on Revo SC-2 LN).
Features
- 5 digital inputs, USB, 2 x SPDIF RCA, SPDIF OPTICAL, AES-EBU. USB input and SPDIF full bandwidth, up to 24 Bit / 192 KHz.
- Possibility to select the oversampling frequency 44.1 KHz, 48.0kHz, 88.2KHz, 96.0KHz, 176.4kHz, 192.0 KHz or AUTO.
- Possibility to customise for each digital input all parameters, including the value of oversampling, clock source, digital filter, phase.
- Possibility to use as the master D/A clock source the local oscillator or the clock form input signal.
- Two separate local clock oscillator for the two values , 22MHz / 24 MHz (44.1 / 48KHz).
- Local Oscillator high stability, low Jitter and low phase noise.
- Two PCM 24 Bit Digital to Analogue converter.
- Digital filter x8 (or x4) oversampling.
- User selectable filter roll-off (Sharp & Slow).
- Proprietary I-V architecture conversion.
- Analogue output stage based with full discrete devices amplifier.
- Extreme low noise, high resolution and high speed.
- Wide band ( >2 MHz ) schematic topology.
- RCA and Balanced output connection.
- Separate power supply for Digital and Analogue Output stage.
- High filtering capacity with numerous low impedance capacitors.
- 15 Powers supply regulators.
- Toroidal transformer specially designed for audio applications.
- Made in Italy
Specifications
- Connections Digital Inputs IN1: USB, 2.0 High Speed, IN2: SPDIF RCA, 75Ohms
- Connections Digital Inputs IN3: AES/EBU XLR, 110Ohms, IN4: TOSLINK OPTICAL, 96 KHz, (192.0 KHz may be achieved, but not guaranteed)
- Connections Digital Inputs IN5 : SPDIF RCA, 75Ohms (IN5 can be set as SPDIF Output by CD Mechanism)
- Sampling Frequencies 44.1KHz, 88.2KHz, 176.4KHz, 48.0KHz, 96.0KHz, 192.0KHz
- UpSampler Frequencies 44.1KHz, 88.2KHz, 176.4KHz, 48.0KHz, 96.0KHz, 192.0KHz, AUTO MODE
- Based on TI SRC4392
- Clock performances +/- 2ppm typ. at 25°, +/- 10ppm at 60°
- Digital Filter Slow & Sharp mode, based on TI DF1706
- De-emphasis 44.1KHz, 48.0KHz, auto e manual mode
- Connections Outputs Line RCA output, XLR Balanced
- Outputs Voltage 3.0 V RMS (+10 dBV) RCA (at 0 dB), 6.0 V RMS (+16 dBV) XLR(at 0 dB)
- Output Impedance 200 ohm
- Analogue Output Filter 0,0 to 180 kHz +/- 3 dB
- Analogue Stage Frequency Response 0,0 to 2MHz +/- 3 dB
- Configuration Solid state
- Oversampling DF 1706 8 x Digital Filter
- Oversampling Filter User selectable Sharp & Slow Roll-off filter response
- D/A Converter PCM 1704 Multibit 24 Bit D/A converter
- I/V Conversion I/V Conversion by proprietary topology with discrete component
- Output Stage Proprietary topology with discrete component, high linearity & low noise
- Supply 230 V AC / 50 Hz
- Dimensions (HxWxD) 126 x 215 x 350 mm
- Weight 5 Kg
Options
- Colour Silver / Black
- DAC Pre HS DA1 Var + 2x Analog In Preamplifier, 2 x Class A Headphone Out – Including Remote RC31
Support
- Manual
- Brochure
Awards& Reviews
- HiFi Choice
- HiFi+
About
Norma products emerge from Cremona, Italy—a city steeped in musical heritage and home to legendary instrument makers like Stradivari and Guarneri. For over two decades, Norma has pursued the synthesis of technical mastery and musical artistry, creating amplifiers that transcend the conventional divide between solid-state precision and valve warmth. Their signature sound marries dynamic vitality, crystalline transparency, and effortless musicality into a cohesive whole, inviting listeners into an intimate communion with the original performance rather than mere reproduction.