 
 |
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| Audio circuit
type: |
Proprietary analog circuit with low-noise op-amp |
| Frequency
range: |
10Hz ~ 40kHz |
| Frequency
response: |
+0dB /-0.5dB 20Hz ~ 20kHz |
| Signal to
noise: |
108.4dB @ maximum output |
| Noise floor: |
-140dB |
| Maximum input: |
+9 Volts |
| Phase deviation: |
+10º at 20Hz | 0º at 1kHz | 0º at 20kHz |
| Total harmonic
distortion: |
0.001%@20Hz | 0.001%@1kHz | 0.002%@10kHz |
| Inter-modulation: |
0.002% @ +0dB |
| Inputs: |
¼" jack for INPUT - ¼" jack
for THRU |
| Merge
function: |
Stereo to mono mix using the IN and THRU jacks for left and right |
| Input impedance: |
220kΩ at the ¼" INPUT jack |
| Input pad: |
-15dB |
| Output impedance: |
200Ω - Balanced XLR-M connector |
| Polarity: |
180º reverse switch |
| Filter: |
High-pass filter -3dB@80Hz (Low-cut) |
| XLR configuration: |
AES standard – pin-1 ground, pin-2 hot |
| Power:
|
48V phantom - proprietary digital switching |
| Ground lift: |
LIFT switch - XLR out pin-1 |
| Construction:
|
14 gauge steel chassis and outer shell, baked enamel
finish |
| Size:
|
3.3" x 5.0" x 2" (84 x 127 x 48mm) |
| Weight: |
1.55 lb (720 g) |
| FCC approval: |
Complies with section 15 of the FCC Rules |
| Warranty: |
Radial 3-year, transferable |
|
J48 Frequency Response

J48 Phase Response

J48
THD vs Frequency
J48
Fast Forier Transform Noise

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