There is standared and luxury version for JA-1(Preamplifeir. Pre-amplifier), JA-99C(Power amplifier)：

Its are the most recommended products in/among Jungson brand, their listening sense and parameters is better than all of these previous old models. there is 6 kinds to choose for you:

A: Standard version JA-1(Preamplifeir. Pre-amplifier), JA-99C(Power amplifier),

B: luxury/deluxe verison JA-1(Preamplifeir. Pre-amplifier), JA-99C(Power amplifier),

C: Standard version JA-1(Preamplifeir. Pre-amplifier),

D: luxury/deluxe version JA-1(Preamplifeir. Pre-amplifier),

E: Standard version JA-99C(Power amplifier),

F:Luxury/deluxe version JA-99C(Power amplifier)

Metal wire drawing panel (Standard Version)

The standard version JA-1 JA-99C adopts the design of metal wire drawing panel + black case, and is anodized

Stainless steel mirror design (Deluxe Version)

Deluxe version JA-1/A-99C adopts JUNGSON's classic stainless steel mirror design, with black chassis

Product parameters:

Model: JA-1/JA-99C (Standard Version/Deluxe Version)

Output power: 2X80W (Class A, RMS, 8Ω)

Harmonic Distortion: ≤0.05 % ( 1KHZ , 1W )

Signal-to-noise ratio: ≥100dB (A-weighted)

Frequency Response: 20Hz~20KHz(±1dB)

Output impedance: 8Ω

Color: brushed metal panel/stainless steel panel + black chassis

Size:

Pre amplifier: 430x375 (including binding posts) x100mm

Power amplifier: 430x500 (including binding posts) x180mm

net weight:

Pre amplifier: 8kg (standard version); 9kg (deluxe version)

power amplifier: 25.28kg (standard version); 27.5kg (deluxe version)

Gross Weight:

Pre amplifier: 8kg (standard version); 9kg (deluxe version)

Power amplifier: 25.28kg (standard version); 27.5kg (deluxe version)

Advanced volume control technology

Using high-precision relay step-by-step volume control technology, unlike the traditional carbon film potentiometer and volume integrated module control, the advantages of step-by-step loss and noise-free greatly improve stability.

Various terminals on the back

JA-1 has a total of 5 groups of analog input, 1 group is balanced, 4 groups are unbalanced, and the line output has a total of 2 groups of balanced and unbalanced outputs

The front panel of the JA-1/JA-99C standard version is designed with metal wire drawing, and the front and rear cabinets (including the exposed armored radiator) are all made of aluminum plate materials, which are precisely processed by CNC lathe.

1: Function display

2: Volume -/+

3: Menu key

4: Function selection

5: Unbalanced signal output

6: Balanced signal input terminal

7: Power input

8: Balanced signal output terminal

9: Unbalanced signal input

10: Balanced signal input (right)

11: Unbalanced industrial signal input

12: Balanced signal input (left)

13: Speaker terminals

14: Power input..

15: Speaker terminals

Standard JA-99C usage scenarios: