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 with Tango line transformer.
Class A , not NFB.
48 step Vishay/Dale RN55 Resistors Attenuation
XLR input with Input transformer.
Full uses Vishay VTA55 and Caddock resistors.
XLR output and RCA output
External power supply
Tango Choke 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 ~ 20KHz 0dB , 10Hz ~ 100KHz -3dB

T.H.D : <0.1% (20Hz ~ 20KHz /2V)

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

Gain: 20 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 : 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

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Room1308, 13/F,BLK C,.
Kai Tak FTY BLDG.
99-101 King Fuk ST,.
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Hong Kong
Tel:(852)93440168
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