I made a plug for the digitech
studio quad 4 but noone seemed to take any notice - they are around $400 but are 4 processors in one so that's $100/processor - the following are the specs
FEATURES
4 independent Inputs and Outputs
Large Custom Display
New, easy-to-use interface
Multiple input/output signal path routings
S-DISC II® powered
The equivalent of 4 signal processors in 1!
Automatic input leveling
Dynamic parameter modifiers
Full MIDI implementation
Multi-function effect Modules
Full bandwidth effects
True stereo effects
ADDITIONAL QUAD4 FEATURES...
Several new effects including: Reverse Delay, Time Warp,
Vocoder, Spring Reverb, Sampler
Effect Configuration Selection within each program
Maximum Delay time of 5 Seconds
Dozens of New Programs
SPECIFICATIONS...
DSP:
A/D Converter:
20 bit, 128 x Oversampled
D/A Converter:
20 bit, 128 x Oversampled
Sampling Frequency:
44.1 kHz
Architecture:
Static-Dynamic Instruction Set Computer
(S-DISC II®)
Digital Signal Path Width:
24 bits (144.5 dB)
Internal Data Path Width:
48 bits (289 dB)
Dynamic Delay Memory:
256k x 16 bits (5.0 seconds)
Static Delay Memory:
256 24-bit registers (5.8 milliseconds)
Data ALU Processing:
11.3 MIPS
Address ALU Processing:
16.9 MIPS
Multiplier Size:
24 bits x 24 bits
General:
Connectors:
1/4" Unbalanced Inputs (4) & Outputs (4)
Nominal Input Level:
-10dBV, +4dbu (Software selectable)
Maximum Input Level:
+18 dBu
Input Impedance:
10k Ohms
Nominal Output Level:
-10dBV, +4 dBu switchable
Maximum Output Level:
+18 dBu
Output Impedance:
470 Ohms
Frequency Response:
20 Hz. - 20kHz. ±0.5dB
S/N Ratio:
Greater than 95 dB; ref =max signal, 22 kHz
measurement bandwidth (A-Weighted)
THD:
Less than 0.03% (1 kHz)
Cheers