Luxman DA-250 USB D/A Converters
The DA-250 is a USB capable Digital Audio Converter that is based upon the successful design of the popular DA-200 (released 2010) with the addition of up to date functions and technical trends integrated into the compact B4 sized body. The intuitive functions of this impressive converter achieve the specifications necessary to build a high grade audio environment. For example, the DA-250 is compatible up to 192 kHz/32-bit PCM and 5.64 MHz DSD, features a Class A headphone amplifier section with significantly improved drive force, includes the LUXMAN computerized attenuator ‘LECUA’* and has the addition of a stylish remote control unit.
For the DAC chip, a 32-bit compatible PCM1795 (manufactured by Texas Instruments Incorporated) is specified that is internally up-convertible to 352.8 k/384 Khz/32-bit. The USB input is compatible up to 192 kHz/32-bit PCM data and DSD data (2.82 M, 5.64 MHz) whilst the S/PDIF input supports up to 192 kHz/24-bit PCM signals. A variety of digital inputs (a coaxial input and 2 optical inputs) are provided as well as the USB inputs to connect to the digital outputs of a CD player and other peripheral AV devices.
A selectable 32-bit digital filter for PCM and a selectable analog FIR filter for DSD allow the tone to be adjusted to taste.
Low phase noise clock modules with high precision and low jitter are fitted independently on both the 44.1 k and 48Khz channels to reduce noise. A remarkably reduced jitter for the USB input is achieved by asynchronous communication for the S/PDIF using an embedded DAIR high precision clock.
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/Output input：USB 1CH、COAX 1CH、OPT 2CH ／ Output：COAX 1CH、OPT 1CH
Analog Input/Output Input：Unbalance 1CH ／ Output：Unbalance 1CH、Balance 1CH、Headphone 1CH (Φ6.3 standard)
Headphone Output 200mW+200mW ／ 16Ω、400mW+400mW ／ 32Ω、130mW+130mW ／ 600Ω
Line output power 2.5 V ／ 300Ω (Unbalance) 、600Ω (Balance) ※FIX/VARIABLE switchable
Frequency response 5Hz～50kHz (+0、-3.0dB)
T.H.D. ／ S/N (IHF-A) 0.001% ／ 118dB
Front panel Power switch、Power Indicator、Input selector、audio volume、7 segment LED display、Headphone out、Phase invert indicator、Fix output Indicator 、headphone sensitivity indicator、Digital Input unlock indicator
Rear Panel AC Inlet、Input Output connectors 、FIX/VARIABLE switch
Remote control function Volume、Input selector、display dimmer、digital filter (PCM / DSD) 、Phase invert、Headphone sensitivity
Dimensions 364 (W) ×81 (H) ×279 (D) mm (include knob 14mm、rear terminal 8mm)