DA250 is a new decoding and amp all-in-one machine launched by Luxman, Japan. It has complete interfaces, which can be used as pure decoding, pure amp, and can also be used with decoding amp. The machine is made in Japan, comes with a remote control, and is guaranteed for one year.
Sound characteristics:
1. Three-frequency balance, delicate and transparent, quiet and elegant, with a good sense of warmth, relaxed and calm! It''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s not amazing and catching with one ear, but it can be tasted carefully. The performance of human voices and musical instruments can be talked about, and the dynamics are coming and it is not rushed to explain them one by one.
2. The openness of the sound field,The mouth shape and the instrument are precise and stereoscopic with fixed focus, with excellent density and 3D image, real stage feeling!
3. There are two options on the back, open pass-through and pre-stage, which can be connected and parallel in pass-through state.
After the front stage with excellent performance is turned on, the pure rear stage can be connected.
But in any case, the headphone port output is equipped with volume adjustment.
4. The strength of the amp is also excellent: a new artifact of Japanese high-end headphones, very suitable for matching with Audio-Technica, Sony, Denon, Fostex, Final and other Japanese low-impedance headphones. It can also be used with low-impedance headphones from Grado.
Official website introduction page:http://www.luxman.com/product.php?pid=58
USB driver download address: http://www.luxman.co.jp/asset/product/DA-06_dl/luxman_audio_driver_1_0_6_0_eng.zip
The internal design and workmanship can be described by the word “exquisite”. The PCB is thick and has a double-layer bunk design, and a thick steel plate is used between the two layers to fix it and also act as an isolation shield. The internal shielding is excellent, the wiring is smooth, and the copper foil is thickened and widened.
The transformer is a customized product with special winding and shielding. The internal wiring is neat and tidy. All capacitors are customized tonic capacitors by Lux.
The DAC chip is BB1795, which uses multiple chips in different links, and even the chip is shielded at key positions, which further improves the quietness and reduces noise.
The op amp uses a large number of JRC5532DD and OPA2134AP.
Digital part
The USB decoding part supports 192 kHz/32bit PCM, and supports DSD decoding (2.8MHz and 5.6MHz).
S/PDI coaxial and optical input support up to 192 kHz/24bit PCM. There are 1 coaxial input and 2 optical inputs.
The decoding chip is American BB1795, and the internal digital signal will be upscaled to 352.8k or 384kHz/32 bit for processing.
Two different digital filter modes are provided (32bit digital filter for PCM and analog FIR filter for DSD).
High-precision low-noise clock module, 44.1kHz and 48kHz adopt different independent modules. The USB part is asynchronous transmission mode, and the S/PDIF input part adopts high-precision DAIR clock processing to achieve the lowest Jitter.
Analog part
The analog output part has two modes: fixed level output and variable level output. The variable level output group can be easily connected to a post-amplifier or active speaker.
Luxman''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s proprietary technology “LECUA” analog electronic volume control was first used in its flagship pre-level C-1000f, and now it is also used on DA250, the volume control of the earphone part and the analog part of the The volume uses LECUA technology. The advantages of this technology are: (1) excellent signal-to-noise ratio, (2) extremely low distortion, (3) no effect on frequency response, no effect on sound quality, (4) minimal difference between left and right channels (5) The crosstalk of the left and right channels is extremely low.
The input sensitivity can be adjusted on the remote control.
The terminals on the back include 18mm gold-plated RCA heads and Neutrik XLR balance heads.
All outputs can be adjusted to reverse phase.
The machine is equipped with a small remote control like a credit card that can adjust the volume and input options.
The output power of the amp part: 200 milliwatts(16 ohm)/ 400 mW(32 ohm)/ 130 mW(600 ohm)
*LECUA = LUXMAN Electric Controlled Ultimate Attenuator
Technical Parameters
project | parameter |
---|
Sampling frequency | 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) |
Digital input and output | Input: USB 1CH, COAX 1CH, OPT 2CH / Output: COAX 1CH, OPT 1CH |
Analog input and output | Input: Unbalance 1CH / Output: Unbalance 1CH, Balance 1CH, Headphone 1CH (Φ6.3 standard) |
Headphone output power | 200mW+200mW / 16Ω, 400mW+400mW / 32Ω, 130mW+130mW / 600Ω |
Analog output level | 2.5 V / 300Ω (Unbalance), 600Ω (Balance) ※Fixed output/variable output can be switched |
Frequency response | 5Hz~50kHz (+0, -3.0dB) |
T.H.D. / S/N (IHF-A) total harmonic distortion | 0.001% / 118dB |
Features | Power switch, power indicator, input selection, volume knob, 7 segment LED display, headphone port, phase positive and negative indication, fixed output indication, headphone sensitivity indication, digital signal lock indication |
Backplane terminal | AC power supply, input and output interface, fixed/variable output switch |
Remote control function | Volume, input selection, display off, digital filter (PCM / DSD), phase positive and negative, earphone sensitivity |
size | 364 (W) ×81 (H) ×279 (D) mm (including 14mm knob protrusion and 8mm protrusion on the rear terminal) |
weight | 5.4kg |