Specifications:

Audio Input
Level: -20dB or +4dB
Impedance: -20dB, >50kΩ unbalanced
                  +4dB, 40kΩ balanced
Connection: 1/4" TRS jack

Audio Outputs
Levels: +4dB +10dBV into 600Ω
                    +16dBV into >10kΩ
           -20dB -8dBV into >10kΩ
Impedance: 600Ω unbalanced
Connections: 2 x 1/4" TRS jacks

Frequency     Wet: 20Hz-15kHz ±1dB
Response     Dry: 20Hz-20kHz ±0.25dB
Dynamic Range    80dB, 20Hz-20kHz
Total Harmonic    Wet: 0.07% 1kHz
Distortion    Dry: <0.025% 1 kHz @ 3V out
                  Wet: <0.05% 1 kHz @ full out
Encoding    16-bit linear PCM
Memory    40 permanent presets
                50 user programmable registers
MIDI IN, MIDI THRU/OUT internally selectable
Footswitches: Bypass, Register step (1/4" jack)
RFI Shielding     Complies with FCC requirements for Class A computer equipment
Power Requirement: 100/120/220/240V 50/60Hz
Physical: 1u 19" standard rack mount x 344mm deep
Weight: 4.9kg (10.7 lbs)

LEXICON DIGITAL EFFECTS PROCESSOR V3.0

Simply Sophisticated
The front panel of the PCM70 does not reveal its sophisticated nature. From this simple array of controls you have access to over 40 preset effects, 50 user registers and 70 variable parameters.

The programs include reverberation, delay, effects combinations including reverse and gated reverb, flanging, chorus, multi-tap delay, spin, circular, pan, filters and a mixture of delay and chorusing.

By adding any MIDI control device such as a keyboard or sequencer, the PCM70 gives you two more ways to control its effects. First, you can store and access your custom sounds in 50 non-volatile registers by associating them with a MIDI Program Change command.

What's more, you can exploit Lexicon's Dynamic MIDI, which lets you modulate up to 10 parameters in real time by patching them to MIDI controls such as Note Number, Modulation Wheel, and Pitch Bender.
 

"Some things in life go on and on and on and on and… (including me, I hear you mutter…). One such piece of audio kit is the ubiquitous Lexicon PCM70. There isn’t a top engineer in the world who doesn’t know these little beauties backwards, and most own at least one. From rich vocal reverbs to phased keyboard washes to echoes and delays, the PCM70 is in truth a versatile multieffect rather than merely a reverb, although the algorithms are awesome, as is the sound (hardly surprising as it used the same converters as the classic 480L). The PCM70 was discontinued because it was too expensive to make rather than because demand dropped. It is of the generation of Lexicons that become a part of the sound rather than flirting around the edges, and as such can be used on almost any signal that need short to medium reverbs (and by medium, I mean a darn site longer than many so called mainframes offer). It’s a little gem, and one that will never go out of fashion. If you’ve got one, you know where I’m coming from. If not, you have a rare treat in store". Funky Junk - July 2008

Full Lexicon price list

Extra photos:
Front 1, Front 2, Front 3, Top, Bottom, Rear 1, Rear 2