Doepfer A-150-8

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Doepfer A-150-8

Doepfer

A-150-8

5 Expert Rating

Product Info

Article Number: 435473
Brand: Doepfer
Model: A-150-8
Price: $195.80

* Prices may vary. Check retailer for current pricing and availability.

The A-150-8 is a workhorse for anyone needing to reroute CV signals or create basic sequencing patterns within a modular system. Its straightforward design and compact size make it ideal for smaller racks or as a utility module in larger builds. It’s a solid choice for experimental patching and building custom control systems.

Product Description

  • Doepfer A-150-8
  • Octal Voltage Controlled Switch
  • Eight manual or CV controllable switches
  • Shared output / input (O / I) and two inputs / outputs (I / O1
  • I / O2) per switch
  • Functions of inputs and outputs are interchangeable
  • Two modes: toggle or level
  • Possible to chain multiple channels from the master / slave function
  • Width: 12 HP
  • Depth: 55 mm
  • Power requirement: +40 mA (+12 V) / -5 mA (-12 V)

*Note:* A protective resistor in each O / I line can cause voltage drops when transmitting CV voltages. When transferring pitch control signals to a VCO, it is therefore advisable to insert a CV buffer (e.g. Art.#378330#, not included).

PROS
  • • Reliable Doepfer build quality ensures long-term stability.
  • • Flexible I/O interchangeability expands routing possibilities.
  • • Master/slave chaining simplifies complex modulation setups.
  • • Compact 12HP footprint maximizes modular space efficiency.
CONS
  • • Protective resistors can attenuate CV signals, requiring buffering.
  • • Limited to simple switching functions; lacks advanced logic.
  • • Can become complex to manage with multiple chained modules.

Product Video

Key Features

Type Voltage Controlled Switch
Functions Eight manual/CV switches, toggle/level modes, master/slave chaining
HP Width 12
Depth 55 mm
Power Draw +40 mA / -5 mA
Connections 8 shared O/I, 2 I/O1, 2 I/O2

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Frequently Asked Questions

The internal resistors can weaken pitch CV signals, leading to instability or inaccurate tuning; a buffer restores the signal’s strength.
While technically possible, it's primarily intended for CV signals; using it with audio can introduce unwanted artifacts and isn't recommended.
One module acts as the 'master', controlling the others in a chain; this allows for centralized control of multiple switches with a single CV input.

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