I-Tech Series Power Amplifiers
Operation Manual page 37
7 AC Power Draw and Thermal Dissipation
I-Tech 4000 AC Current Draw and Thermal Dissipation:
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.
Typical line impedance used.
Data based on both channels driven.
Line Current 
120VAC
Watts Out 
Per 1A 
Amp Line 
Current
Line Current 
208VAC
Watts Out 
Per 1A 
Amp Line 
Current
Line Current 
230VAC
Watts Out 
Per 1A 
Amp Line 
Current
Btu/hr kcal/hr
Idle (sleep mode) 0.8 0.95 0.9 53 182 157
Idle (awake) 1.6 1.4 1.3 172 587 505
1/8th Power Pink Noise 8 Ohms/Ch.
Typical of program material  16 Ohms Bridge
just at clip. 4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
1/3rd Power Pink Noise 8 Ohms/Ch.
Typical of program material 16 Ohms Bridge
with severe clipping. 4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
Load
Thermal Dissipation
305
1413 356
5.3 94.659.6
64.9 116.3
2426 612
4108.0 476
17.8 711
17.7 115.3 128.7 824
142.1
709
4.8
6.6
10.5
10.7
1491
2814
437
3.4
4.7 414
3.1
4.4
I-T4000
10.9
1625
376
1040 262
7.8
4.4
6.0
9.5
9.4
58.1
77.1
77.0
70.3
106.9
96.1
126.2
129.1
106.0
139.9
Watts 
Dissipated
120VAC 208VAC 230VAC
102.6