Reference one MK2 tube line preamplifier

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.



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Main unit : Volume , Input Selector , Phase Normal / Inverse, AV Bypass Sound/AV Processor, 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: 17.8 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 


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