R-1

Reference one Tube Line Preamplifier

The Reference One is Audio Experience Reference Grade line preamp. it uses one Western Electric 417A / 5842 tube with one Tango line output transformer construct Class A NOT NFB circuitry for each channel.

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

Features

Western Electric 417A / 5842 for Gain stage.
TANGO line output transformer (made in Japan).
Class A , not NFB.
Gain and Volume uses TKD conductive plastic potentiometer
XLR input with JENSEN (made in USA)Input transformer.
Full uses Vishay VTA55 and Caddock resistors.
XLR output and RCA output
External power supply
TANGO Choke (made in Japan) at HVB+ power supply

Specifications

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

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

Input : One pair XLR input , Three pair RCA input.

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

Frequency Response: 20Hz ~ 45KHz ( 20Hz -0.5dB, 45KHz -3dB )

T.H.D : <0.06% ( 1KHz / 1V)

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

Gain: 20 dB ( XLR and RCA are same gain )

S/N: >100dB

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

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

Phase Mode : Normal

Max Output : 10V/ 30Hz ( load at 600 ohm )

Line-Stage Tubes : 2 pcs 417A / 5842 , 1pcs 6X4.

Dimension: Main 455mm x 350mm x 120mm (W x D x H) , power supply 160mm x 135mm x 60mm (W x D x H).

Weight: Main and power supply total 10kg

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

Actual price: HK$19800

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