image courtesy of Kevin Lightner

"The complete system consists of the Main Console, the Keyboard Controller, and five optional blocks for a total of 47 modules. Available Modules include:

• 701A: 5-octave keyboard
• 702A,B,C,D,E: VCOs with four waveforms (sine, triangle, sawtooth, and rectangle), PWM, and range knobs (LO to 2'), and a pitch control (+-12 semi-tones)
  • A: has a PWM input and slider, and LFO1 mod input is hard-wired
  • B: has a hard-wired ADSR1 and LFO1 modulation inputs and sync
  • C: has a Sample & Hold and LFO1 input and sync
  • D: like A but with a socket instead of hard-wired mod inputs
  • E: like B&C without the hard-wired inputs
• 703B,C,D: 12dB VCFs
• 703E,F: 24dB VCFs
• 704A,B,C,D: VCAs
• 705A: Dual Envelopes
• 706A,B: LFOs
• 707A: Envelope Follower
• 708A: Noise and Ring Modulators
• 709A,B: Sample & Hold Modules
• 710A,B: Multiples
• 711A: Output module (Stereo VUs, a six-position test-tone, a Phase Shifter, a Spring Reverb, and voltage-controlled Panning)
• 712A: CV Processor
• 713A: Gate Delay
• 714B: Frequency-to-Voltage Converter, Envelope Follower
• 715A: Multimode Filter, Mixer
• 716A: Mixer
• 717A: Analog Sequencer
• 718A: Power Supply
• 720B: 2-channel Phase Shifter
• 721B: 2-channel Audio Delay
• 723A: Analog Switch

A Patched System 700
image courtesy of archives at Hyperreal

Although it was possible to order custom configurations, most System 700s were sold in the following configuration blocks:

• "Block 1: The Main Console contains all the basic modules necessary in a professional system for the synthesizing of sound and can be used alone with the Keyboard Controller as a complete synthesizer in itself. On the Main Console, most common connections are made internally without the use of patch cord connections for greater freedom of patching. Modules in the Main Console include: (3) VCOs, (2) VCFs, (2) VCAs, (2) LFOs, (2)ADSR envelope generators, Noise source, Ring Modulator, Voltage Processor, S/H (sample-and-hold), Envelope Follower, "Integrater" (Lag Processor), Mixer, 2 X 5 multiples, Headphone Monitor Module, and an Output Module, which includes Stereo VUs, a six-position test-tone, a Phase Shifter, a Spring Reverb, and voltage controlled Panning
• "Block 2: The 5 octave, 61-key (C-C), two-voice Keyboard Controller has Portamento and Pitchbend controls.

"Optional blocks can be chosen and arranged according to the particular needs of each studio. All of the modules in the optional blocks are interchangeable, thus the numbers and types of modules can also be changed to suit the studio. The main modules of the optional blocks are:

• Block 3 (Sequencer): a 3 X 12 step sequencer, Pulse Shaper, Clock Oscillator, and Series and Parallel output sections
• Block 4 (VCO Bank): 6 VCOs, a dual ADSR envelope generator, LFO, Sample and Hold, 2 X 5 Multiples, and a small Mixer
• Block 5 (VCF/VCA Bank): (2) VCFs, (3) VCAs, (2) dual ADSR envelope generators, 2 X 5 Multiples, and a Gate Delay
• Block 6 (Interface/Mixer): a Frequency-to-Voltage Converter Interface, a VCA, 9-channel Audio Mixer, and a Fixed Filter Bank
• Block 7 (Phase Shifter/Audio Delay): a two-channel Phase Shifter and a two-channel Audio Delay, four input Analog Switch, and a very flexible multiple (1X12, 1X4 /1X8, or 3X4)

[from Roland's System 700 promotional ad]

Also available was a "Laboratory System 700" consisting of (3) VCOs, noise and ring mod, VCF, VCA, mixer, LFO, Sample & Hold, and a Dual Envelope Generator.