APL HIFI DSD-GR – DSD digital-to-analog converter with tube output
10.01.2025 10:19
APL HIFI DSD-GR is a new Pure DSD, “Galactic Reference” DAC, using a transformer-coupled tube differential Class-A output stage. The device is built on a fully balanced scheme and offers a proprietary asynchronous USB input module.
Next in the signal chain, the proprietary 64 bit PCM to DSD converter module with DSD256 and DSD512 capabilities (non oversampling NOS mode without filtering is also present). Digital-to-analog conversion is entrusted to the proprietary assembly of Pure DSD conversion module using non-magnetic resistors. APL HIFI DSD-GR is also equipped with RJ-45 input woking in balanced I2S mode.
The design of the APL HIFI DSD-GR uses an audiophile element base - custom Lundahl interstage and output transformers with oxygen free copper windings. Pure Class-A, differential output stage operates on the ECC99 tubes. Only non-magnetic resistors are used in the circuits of the device, op amps are not used, negative feedback is zero. Internal wiring is made of oxygen free copper cables featuring Esprit Audio cables for the critical paths. The main power supply of the model is based on an custom R-Core balanced main power transformer with OFC windings; Lundahl choke used for the tube power supply.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
DACs — APL HIFI DSD-GR
Model name
DSD-GR
Conversion type
N/A
Engine
Pure DSD Digital to Analog conversion module using non-magnetic resistors
DSD compatability
Yes
Parameters
up to PCM 32/384 and DSD512
Frequency response low +/- 3dB (Hz)
N/A
Frequency response high +/- 3dB (Hz)
N/A
Gain (dBu)
N/A
Output Level (balanced) (V)
N/A
Output Level (single-ended) (V)
2.5
Input Impedance (balanced) (Ω)
N/A
Input Impedance (single-ended) (Ω)
N/A
Output Impedance (balanced) (Ω)
N/A
Output Impedance (single-ended) (Ω)
100
Analog outputs
N/A
Signal to Noise Ratio (dB)
N/A
Total Harmonic Distortion + Noise (% at 22 kHz)
N/A
Dimensions (mm)
450 x 120 x 380
Weight (kg)
24.5
Official link
More content
SPEC RSA-EX1000 – integrated amplifier in a case made of maple and spruce
The Japanese company SPEC CORPORATION has introduced a new integrated amplifier SPEC RSA-EX1000. The model uses a main board designed to minimize the length of the passage of musical signals from the volume control to the low-pass filter - according to the manufacturer, this preserves even the weakest signals and ensures a wealth of detail. Of course, the sound quality is also improved by reducing the inductance (coil effect) due to the minimization of internal wiring.
AURALiC unveiled Aquila X3 Streaming Media Processor with CD Transport
AURALIC has introduced the AQUILA X3 Streaming Media Processor - a new addition to the company's family of digital-to-analog audio products. The AQUILA X3 features a 14" touchscreen display, and a modular architecture with a huge number of upgrade options.
Two Giants from Constellation Audio: Statement Mono Amplifier and Statement Stereo Amplifier
The flagship High End power amplifiers from Constellation Audio, the Statement Mono Amplifier and Statement Stereo Amplifier, use a whole clip of the company's innovations and provide outstanding sound quality.
Taga Harmony TCD-70T – affordable tube CD player
Polish company Taga Harmony presented the Taga Harmony TCD-70T CD player, the output stage of which is implemented on two 6N2 tubes. Together with the reference chip of the ESS Technology SABRE ES9018 converter and a large-sized power supply based on a 100 W toroidal transformer, the model promises luxurious sound quality.
Definitive Technology Demand D11 – compact bookshelf loudspeakers with a bunch of innovations
The Definitive Technology Demand D11 bookshelf speakers use a dual suspension system of the BDSS mid/low-frequency driver, in which the 165 mm polypropylene diffuser is attached to the basket not only along the outer edge. In this case, the second suspension in the center of the system connects the inner edge of the diffuser with the core, which contains a proprietary waveguide - this design significantly improves the linearity of the diffuser movement.
