SPECIFICATIONS

Package: Yes

Origin: Mainland China

Model Number: PRT-07B

Maximum Power Per Channel: NO POWER

Channels: 2 (2.0)

Brand Name: GZLOZONE

 

Type1: finished preamp without tubes (Note: choose this version will need install yourself correct tubes, or the preamp will not works)

Type3: finished preamp with 3pcs (Czech )JJ ECC83 tubes

Work voltage AC115V or AC230V for choose
Support 4 way stereo audio inputs
Wne way output

 

With remote control: Power on/off choose input Adjust volume Mute

 

Rotate the Right one selector knob is choose inputs. press the selector is standby.

 

Rotate the left knob is adjust the volume

 

 

Using 3 pcs Shuguang 12AX7 tubes/or JJ ECC83.

 

Hi end Oxygen-free copper R-core transformer

 

Origianl Japan ALPS Potentiometer.

 

Taiwan high quality frosted Pure copper RCA terminals.

 

Full aluminum chassis + Stainless steel switch

 

This preamp is reference the famous Marantz 7 Circuit ,The carefully tuned M7 is very comprehensive and dynamic. The human voice is natural and delicate, the strings are smooth, stretched, and the positioning and imaging are excellent. The high and low frequencies are extended in place, and the low frequencies dive deep and powerful without lack of flexibility.

 

There are many tube preamp on the Internet design is not very reasonable. The main manifestation is that the distance between the ubes is too close. ZERO-ZONE suggests that the distance between the center of each is greater than 40mm.

 

● Gain: about 10 times.

● input impedance:47K

● SNR: 90dB;

● Frequency response: 10Hz--30KHz;

● Distortion: ≤1%.

● Size:362*98*340MM (W*H*D)

 

Package include: Finished preamp X 1

 

Remote X1 (no battery)

 

Default is not include any cables.