R-1 not remote version

Reference one MK2 tube line preamplifier ( not remote version )

The Reference One MK2 is Audio Experience Reference Grade line preamp with remote control version. it uses one 12AU7 at tube input stage to driver Western Electric 417A / 5842 tube with one Hasimoto line output transformer construct Class A for each channel. This design is from our Flagship grade preamplifier THE REAL.

The Reference One 's application of a highly efficient solid-state voltage regulator with 6X4 Tube for current regulator and Hasimoto choke in the HVB+ power supply . Also it use the external power supply get highest S/N, the power supply is dual mono design.

Features

Western Electric 417A / 5842 and 12AU7 for Gain stage.
Hasimoto line output transformer (made in Japan).
Class A .
Gain and Volume uses TKD conductive plastic potentiometer
XLR input with JENSEN (made in USA) input transformer.
Full uses Vishay Date , Caddock , Mills resistors.
XLR output and RCA output
External power supply ( dual mono design )
Hasimoto Choke (made in Japan) at HVB+ power supply

Specifications

Controls
Main unit : Volume , Gain, Input Selector , Output XLR/RCA Selector , Power Light On/Of .

Power supply : Power On/Of

Output : Two pair XLR Main Output , Two pair RCA Main Output .

Input : One pair XLR input , Three pair RCA input , One pair Processor input with XLR/RCA.

Output Impedance : 60 ohms
Recommended load: 600 ohm or greater.

Frequency Response: 20Hz ~ 70kHz ( 20Hz -0.25dB , 70kHz -0.25dB) at 2V output.

T.H.D : 0.055% 1kHz at 2V

Input Impedance: 10K ohm XLR , 50K ohm RCA.

Gain: 19.5 dB ( XLR and RCA are same gain )

S/N: >110dB

Channel Balance: <0.1dB(20Hz ~ 20KHz /max output)

Channel Separation: >98dB(2Hz ~ 20KHz)

Phase Mode : Normal

Max Output : 26V

Line-Stage Tubes : 2 pcs 12AU7 , 2 pcs 417A / 5842 , 2pcs 6X4.

Dimension: Main 455mm x 350mm x 120mm (W x D x H) , power supply 400mm x 310mm x 80mm (W x D x H)

Weight: Main and power supply total 13.5kg

Power Source: 110-127/220-240V,50/60Hz

Actual Price: HK$28800　

YS-Audio
Room1308, 13/F,BLK C,.
Kai Tak FTY BLDG.
99-101 King Fuk ST,.
San Po Kong,   KLN,.
Hong Kong
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