Product Review

Replaceable Tube and OP AMP:
Tube module: 6C11 (in default); EC81; 6R4
OP AMP: TI NE5532 (in default); OPA2111; OPA2604; OPA2132; OP275; OPA2107; JRC4558; MUSES02; LM4562

Spectrum Operation:
Normal mode:
1. Press the button for 1 second - Mode switch (there will be a corresponding preview ).
2. Press the button for 3 seconds - Switch between real mode and AGC mode (there will be a corresponding preview ).
3. Press the button for 5 seconds - Enter the speed setting mode
4. Press the button for 10 seconds - Factory default
5. Double click on the button - Adjust the brightness of the light bar, low / medium / high
Speed setting mode: (In normal mode, press the button for 5 seconds to enter, press the button for 5 seconds to exit)
1. Press the button for 1 second
a. The rising speed of the light bar (7 optional)
b. The falling speed of the light bar (7 optional)
c. The holding time of the peak (7 optional)
d. The falling speed of the peak (7 optional)
e. Zoom in / out in real time mode (7 optional)
Loop in these functions.
2. Click the button - Loop to change the parameters set.

Specifications:
Tube: 6C11*2
Input: 3.5mm Gold Jacks
Input Impedance: 20K ohms
Input Sensitivity: 800mV
Output: 3.5mm Gold Jacks
Output Impedance: 40 to 300 ohms
Output voltage: 24Vp-p
Frequency Response: 30-30Khz (±1db)
Input AC Voltage: 12~15V AC
Power Consumption: 8W
Colors: Black, Gold
Weight: 0.6 kg / 1.32 lb
Dimensions without tube (L*W*H): 106*106*19 mm / 4.17*4.17*0.75 in

Packing List:
1 * P2 headphone amplifier
2 * 6C11 tubes
1 * power supply
1 * 3.5mm audio cable (15 cm / 5.91 in)