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Arp 1601 

16 steps sequential voltage generator  (1976)

Arp 1601

"Cult and rare analog step sequencer derived from module 1027 included into the Mighty Arp 2500 modular. Later with an outfit update with model ARP 1613 and then ARP 1623  " 

 Main Data 

Arp 1601

Company: ARP 
Model: 1601
Class: step sequencer
Keyboard: none
Dates: 1976
Country: United States
Weight: 3,6  Kg
Dimensions: / mm
Price: 2000€

Display: none
Technology: analog
Tracks: 2 (A/B)
Memory: none
CV range: 0-10V
Scale : 1V/Oct (1/12V per semitone)
Clock: internal generator or external trigger input
PSU: internal

panel connectors:
-  CV IN, CV OUT
 - Gate In, Gate Out 
- Trigger In
- gate bus out 1 2 3 
- step advance input
- reset input
- clocked gate out
- quantized out 1 /2
- CV input (transpose)
- quantized input 1/2
- multiple (x4) patch
- clock normal out
- footswitch out
- Start/stop  + reset clock
- pulse witdh adjust



none yet

- No official VST plugin


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Sequencer 1601 In details 

Sequencer

VOICE structure works with either 16 x 1 steps or 8 x 2 mode with  a simple switch. The 1601 works with 1V/Oct. Each step can be set to a specific voltage note value (plays if relative red led is switched on). Each step also generates different voltage gate on 3 different gatebus  1-2-3 which can be also used as smart Envelope generator.  
It is also possibile to skip a note or generate a reset to first step and play in a special Randomish mode.

Tracks

- 1 track with up to 16 steps
- OR 2 tracks with up to 8 steps each. 
- Straight note playmode, no backwards, pendulum or other Doepfer weird stuff but a  randomish mode (activate the switch).

Voltage

Scale 1V/oct with 0-10V range 
and a Positive gate (no S-trig for Anti-moog purposes).
- Transpose whole sequence with CV  adding tension from external keyboard.

Quantisize

Dual VCO quantisizer voltages to the nearest relative note. A very smart function way ahead of its time, especially if you are NOT into microtonal music.

Clock

Internal clock with frequency an manual button for step advance or reset.
Sequencer can be sync also with external triggers (patch trigger clock into step IN)

PUB

ARP 1601

Our Verdict 

"Smart powerful machine, now quite rare and pricey! " 

Sound 
quality

Interface

Build
 quality

Rarity

Quality / 
price

Overall

CONS

- pricey
- not really modern 
- hard to find

PROS

-Rare
- powerful
- fun

Are you an ARP SEQUENCER  user? do you like it? You do not agree with our review?  Let us know in the comment field just below 

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Arp sequencer

Audio demo and video 

ARP 1601 sequencer ARP 1601 sequencer
87 out of 100 based on 1 user ratings
1500 to 2000 from 1 sellers Sellers: