Luxman’s DA-250 is a Class A Preamplifer, Class A Headphone Amplifier and a USB capable Digital Audio Converter packaged in a slim & compact B4 form factor. It delivers a wonderfully musical rich tone that will provide countless hours of fatigue-free listening enjoyment.
USB input is compatible up to 192 kHz/32bit PCM data and DSD data (2.8MHz and 5.6MHz).
S/PDIF input handles up to 192 kHz/24bit PCM signals.
In addition to USB input, the DA-250 has a coaxial input and two optical (Toslink) inputs to enable connection with a CD player and / or DVR, satellite radio etc.
The Texas Instruments PCM1795 was selected for the DAC, which contains a 32 bit digital filter, digital signals are up-converted internally to 352.8k or 384kHz/32 bit.
Two different kinds of tone filter setting are provided and switchable to your taste (32bit digital filter for PCM and analog FIR filter for DSD).
Low phase noise clock modules are mounted independently on both 44.1 k and 48kHz channels to reduce noise around the oscillating frequency and to generate highly accurate low jitter clock signals.
By using asynchronous communication for the USB input and a DAIR high accuracy clock for S/PDIF, low jitter reduction is possible.
The configuration of D/A converter and high quality pre-amplifier circuit has been considerably upgraded in terms of both sound quality and performance.
Output signal can be selected between Fixed and Variable modes.
Variable position is convenient for a direct connection to a separate type power amplifier or a powered speaker system. For example a matching LUXMAN M-200 stereo amplifier can be used to drive the loudspeakers of your preference.
Luxman’s proprietary design, electronic attenuator “LECUA*” first introduced in the flag-ship C-1000f control amplifier is now employed in the DA-250 for both headphone and line outputs independently, operates fully in the analog domain, it eliminates all potentiometers from the signal path. This has a number of advantages, such as (1) outstanding S/N ratio, (2) extremely low distortion, (3) virtually no change in frequency response and sound quality at any listening level, (4) minimal left/right level differences (tracking errors), and (5) minimal left/right cross-talk. The result is a volume control that far surpasses conventional concepts.
By adding a new discrete buffer circuit to the headphone output, the drive impetus has been greatly improved.
The input sensitivity can now be selected from the remote control.
By providing an independent buffer circuit to each output (balance/unbalanced/headphone), the interference and changes in sound quality when used simultaneously have been eliminated.
A highly visible 2-stage, 7-segment LED with a dimmer function is mounted on the stylish front panel with a blaster white finish. The DA-250 also features an output phase selection switch that is useful for connecting with other companies’ balanced devices. A compact, card style remote control is provided enabling full control from the listening position. Gold plated 18mm pitch RCA jacks and high grade XLR terminals manufactured by Neutrik® are mounted on the rear panel to allow high-quality, high performance cables to be used. The original LUXMAN high sound quality playback software ‘LUXMAN Audio Player’ is also available, supporting a wide variety of formats such as DSF and FLAC whilst offering a simple operation solution.
||2-channel D/A converter
|Supported sampling frequencies
||USB input (PCM) : 32k, 44.1k, 48k, 88.2k
96k, 176.4k, 192k(16, 24, 32bits)
USB input (DSD) : 2.82M, 5.64MHz (1bit)
COAX/OPT input : 32k, 44.1k, 48k, 88.2k
96k, 176.4k, 192kHz (16, 20, 24bits)
MC HIGH: 0.37mV, MC LOW: 0.12mV
||USB x 1, COAX x 1, OPT x 2
||COAX x 1, OPT x 1
||Unbalance x 1
||Unbalance x 1, Balance x 1, Headphone x 1
|Line output voltage/imipedance
||Unbalance : 2.5V/300Ω, Balance : 2.5V/600Ω
||130mW + 130mW(600Ω)
400mW + 400mW(32Ω), 200mW + 200mW(16Ω)
||2Hz to 50kHz (+0, -3.0dB)
|Total harmonic distortion
|S/N ratio (IHF-A)
||230V~(50Hz) / 115V~(60Hz)
||364(W) x 81(H) x 279(D) mm
front side knob of 14mm and rear side terminal
of 8mm included in depth
||Remote control (RD-24) Power cable