Arp  Little Brother

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ARP Little Brother
Excellent condition. It’s a really cool ARP synth expansion module but can be used with any analogue synth since it has cv control.

From Wikipedia:
he ARP Little Brother, produced from 1975 to 1977, is a keyboardless monophonic expander module,[2] sold as an add-on for another ARP synthesizer. It was controlled by connecting the control voltage (CV) output of an ARP synthesizer's keyboard to the Little Brother's CV input.
Little Brother
Manufacturer
ARP Instruments, Inc.
Dates
1975 - 1977
Technical specifications
Polyphony
Monophonic
Timbrality
Monotimbral
Oscillator
1 square[1]
LFO
1 triangle
Synthesis type
Analog Subtractive
Filter
None
Storage memory
none
Effects
none
Input/output
Keyboard
none
External control
CV/Gate, ARP system interface
The Little Brother had a single voltage controlled oscillator (VCO) with selectable waveforms, and a sub-octave divider that could produce up to three additional tones simultaneously at -1, -2 and -3 octave intervals. It also had an LFO, and a pitch bend/master tuning knob. However, it had no voltage controlled filter (VCF), voltage controlled amplifier (VCA) or envelope generator (EG or ADSR). When used with other ARP synths to "fatten up" their sounds, the Little Brother's audio output had to be patched into the external audio input of its companion synthesizer, essentially adding an extra VCO and LFO to the system.
It was commonly sold with the ARP Axxe, and was given away for free with the purchase of an ARP Odyssey during a summer 1976 promotion. However, it could be used with any analog synthesizer that had the necessary 1v/octave CV output and external audio input connections.

From Synthmuseum.com:

his is a strange piece, probably the strangest ever built at ARP. It consists of a single VCO, but with organ-style divide down and wave shaping circuitry. The divider only makes the same noteas the VCO is sounding. No intervals. Thus, whatever voltage you use to make the VCO make a pitch, you get that pitch (2'), and the next three octaves down (4', 8', 16'), all available at the same time, like an organ. Furthermore, there are four waveforms available: Sawtooth, Square, Pulse, and PWM, and these are available at the same time, too. Moreover, when you turn on the sawtooth and square waves and the 2' and 8' octaves all at the same time, you really do get a 2' saw, a 2' square, an 8' saw, and an 8' square, all at once! They're all phase-locked to each other because of the dividers, but if you beat them against the other VCOs in your synthesizer, it can sound really fat.

Product Specs

Condition
Excellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.learn more
Brand ARP
Model Little Brother
Categories Analog Synths

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Quick shipping. Awesome instrument! A+++ seller

Jesus D. - January 12, 2020

Tom P. - December 16, 2019

Great seller! Good price, prompt shipment, great communication, no license transfer issues!
...and the unit is cool! Works with no problems 🙂

Larry A. - December 03, 2019

Great seller!

Elijah W. - November 22, 2019

J's garage shipped the synth in a nicely wrapped and secured package, transaction process was great. "J" was in constant communication and gave me proper setup recommendations --- thank you again!

Ric G. - September 27, 2019

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Available for local pickup from Dallas, TX, United States

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J’s Garage Sale

Dallas, TX, United States
Joined: Dec 2017