The AM660 is a faithful recreation of the classic sound and compression profile of the 660, using the AnaMod™ process to model the complex tube circuitry of the 660 and implement it entirely in the analog domain. Unlike a digital plug-in or processor based outboard gear, there is no latency, and no A/D or D/A conversions to compromise the sound.
AM 660 Specifications
Input Impedance: 20KΩ, balanced
Output Impedance: less than 50Ω
Max. Output Level: +27dBu, balanced
Input Gain: -15 to +15 dB
Frequency Response: +/- 1 dB from 40Hz to 15kHz
Noise Level: better than 73dB below +4dBu, 0-30kHz
Limiting Noises: same level as a vintage 660 with GE five star 6386 tubes and properly balanced
Total Harmonic Distortion: level- and compression-dependent
Compression Ratio: Variable from 1: 1 to 20:1, level-dependent
Time Constants: 1-6 are the classic 660 time constants, 2a and 2b are variations on #2
Position
Attack Time
Release Time
1
0.2ms
0.3s
2
0.2ms
0.8s
2a
0.2ms
1s
2b
0.2ms
2s
3
0.4ms
2s
4
0.8ms
5s
5
0.4ms
Auto, as in 660 #5
6
0.2ms
Auto, as in 660 #6
