Reference 1 preamplifier

 

Reference 1 is the first reference class line-stage preamplifier offered by JE Audio. Reference 1 employs all-tube pure Class-A single-stage wideband balanced amplifier design. 6H30Pi vacuum tubes are used for signal amplification. No semiconductor devices are used in the signal path. Because of employing just one single-stage, Reference 1 has a lower phase shift compared with conventional multi-stage feedback amplifiers. Additionally, no global feedback is used so that the purity of the musical signals is preserved.

Reference 1 line stage preamplifier is equipped with a proprietary design digital potentiometer for volume control. The digital potentiometer is designed in such a way that it only attenuates the incoming signals but does not affect the signal integrity.

Reference 1 line-stage preamplifier presents lifelike musical quality in terms of transparency, dynamic and extraordinary imaging capability. It will meet any demands for high performance audio.

 

 

DESIGN
Class-A single-stage wideband balanced amplifier

VACUUM TUBES
6H30Pi x 4

TOTAL HARMONIC DISTORTION
< 0.05% (@ 2V/100k ohm)

SIGNAL GAIN    
18dB (measured when the volume control is bypassed)

VOLUME CONTROL    
Total 99 steps
 
FREQUENCY RESPONSE    
+0, -3dB from 10Hz to 500kHz
(measured when the volume control is  bypassed)                            

INPUT IMPEDANCE    
> 130k ohm
                                                   

 

OUTPUT IMPEDANCE    
1.5k ohm

S/N RATIO    
> 90dB

POWER CONSUMPTION    
65W
    
DIMENSION    
H=175mm, W=460mm, D=390mm

NET WEIGHT    
14.5 kg / 32 pound

OTHERS
• Come with a remote control
• Six XLR inputs and 3 XLR outputs
• Phase invert and non-invert selectable
• Volume control for L-Ch and R-Ch can be set independently
• Cumulated operation time of the preamplifier is
continuously stored and can be displayed

 

 

"if what you’re looking for, first and foremost, is great sound -- specifically, great tube sound -- give JE Audio’s Reference 1 a serious audition. It’s an incredibly good preamplifier for a reasonable price. Its build quality is excellent, its feature set very good, and its sound is out of this world. It’s my top recommendation for preamplifier pleasure for under ten grand." Doug Schnedier of SoundStage. Reference 1 preamplifier received the Reviewers' Choice award. (Click here to read the full review.)

 

(German)

(Click the icon to read the full review.)