The nvelope 500 is a powerful audio processor capable of making subtle or drastic changes to a sound by providing control over its attack and sustain characteristics.
Mono Mic Preamp & DI Module with Custom Wound Sowter Transformers, for 500 Series Rack
An all-discrete 8 channel summing amp / 8×2 Mixer – Only for the Purple Audio Sweet Ten.
EQ Module with Treble and Bass Shelf, Hi- and Lo-mid 7-selection "Q" Switching, and 3-position Filter, for the 500-Series Rack
FET Compressor Module with Sidechain Filter, for the 500-Series Rack
500 Series Tube EQ with Dual-triode Circuit, High/Low Shelving, and Lowpass Filters.
DC coupled ribbon mic with 10dB gain boost setting.
500 Series Mic Pre/EQ Module,] Class A, 70dB of Gain, 3-band EQ, with Hi Pass Filter, Mic and Line switching
Discrete Single Channel Pultec-style 3 Band EQ for the 500-Series Rack
Single Channel 500 Series Noise Gate Module with Variable High and Lowpass Filters, Envelope Control, Attack, Hold, Decay, and Range Controls
2 slot Rack for 500 series modules with 2 x 312A Mic Pre Modules
500 Series Mono Class-A Discrete Microphone Preamp / DI with BX4 Steel Output Transformer
Mono Class-A Discrete Microphone PreAmp / DI with BX2 Nickel Output Transformer, for the 500-Series Format
500 Series Mic Pre/DI, with 80dB of Gain, Pad, Hi Pass Filter Pad, and 80Hz Low-cut Filter, Mic/Line, Phase, 48V and Impedance