睿志音响

R-28 (2021 Version)

Fully Balance Discrete Transistors Headamp And Preampamps All In One

Built in real balanced headphone amp max output power achieve 9500 mW that can drive most headphone easy.

8 group fully discrete R-2R DA modules to combine into real balanced push/pull decoders.

4 group fully discrete real balanced DSD native decoders.

Fully discrete real balanced current transmition design.

2 pc ultra high frequency 90/98 MHz Accusilicon 318B femtosecond clocks provide synchronous clock for whole unit without PLL up-frequency .

32bit / PCM384K /DSD512 asynchronous transfer Amanero 384 apply the FPGA synchronous clock.

The whole digital circuit built with 1 pc FPGA and 5 pc CPLD programmable chipsets to separate the different configured circuits for avoid interrupt, data process in parallel mode.

Support firmware update to improve on sound quality.

All digital process mode settings accessible by buttons on front (No need to open the chassis).
　

Specifications tested by OS8 mode and already through sound tuned, we always improve for better real like , musical and analog sound ,improvement may result in changes in specifications and design without notice.
S/N Ratio	>120DB
THD+N	<0.01%
Gain	L mode : +12DB H mode : +22DB
Volume characteristic
Channels imbalance	< 0.05DB
Frequency Breadth	20Hz - 20KHz (< - 0.5DB)
Output Level	Headphone output : 19V RMS (balance) Preamp Variable output : 19V RMS (balance) DAC Fixed output : 5 V RMS (balance)
Headphone amp output power level (Only for headphone over 15 ohms.) Balanced mode	9500mW / 25 ohm 8000MW / 40 ohm 3500MW / 100 ohm 1200MW / 300 ohm 600MW / 600 ohm
Output impedance	1 ohm / Headphone output 5 ohm / DAC / Preamp output
Input Sensitivity	0.5 Vp-p(75 Ohms, Coaxial) 19 dBm (Optical)
Support Operate Systems (USB)	Windows, OSX, Linux, ISO
Support Sampling	USB & IIS : 44.1kHz - 384kHz /32Bit DSD64-512 Coaxial mode: 44.1kHz - 192kHz Optical mode: 44.1kHz - 96kHz
Power Requirement	1 Version 100-120V AC 50/60 Hz 2 Version 220-240V AC 50/60 Hz
Power Consumption	35W
Package Weight	Approximately 8.5KG
Dimensions	W360 X L360 X H85(MM, Fully aluminium )
Accessories	AC power cord X1 USB cable X1

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