DOEPFER A-138B Exponential Mixer Modular Eurorack Circuit

( Brand: Doepfer ), ( Model: DOEPFER A-138B ), ( Type: Modular Synthesizer ), ( Manufacturer Part Number: A-138B )

Review DOEPFER Exponential Mixer Modular Eurorack New Perfect Circuit

The Doepfer A-138-B Exponential Mixer is a versatile and essential module for any Eurorack modular synthesizer setup. This exponential voltage controller mixer offers unique features that make it an indispensable tool for sound designers, musicians, and electronic music enthusiasts.

At its core, the A-138-B is a 4-channel voltage controlled mixer, but it's not just any mixer. Each channel input accepts both CV and audio signals. The CV input can accept exponential or linear voltage, making it perfect for mixing signals from voltage-controlled oscillators, filters, and other modular synth modules. The mixer's audio inputs can handle a wide range of signals, from the most subtle sounds to the loudest noise bursts.

One of the standout features of the A-138-B is its exponential mixing capability. By mixing exponential voltages, the module can create complex, non-linear sound transformations. This is particularly useful when blending signals from voltage-controlled oscillators that generate complex waveforms, allowing for intricate modulations and timbral variations.

The mixer also includes a sum output, which provides the sum of all four channels. Additionally, each channel has an individual output, enabling users to route individual channels to other modules or external equipment. Each channel output also features a level control potentiometer, allowing users to adjust the output level of each channel.

The A-138-B's front panel is clean and intuitive, with clear labeling for all controls and inputs. The module is housed in a robust aluminum chassis, ensuring durability and reliability in even the most demanding performance environments.

Overall, the Doepfer A-138-B Exponential Mixer is a versatile and essential module for any Eurorack modular synthesizer setup. Its exponential mixing capabilities make it a powerful tool for creating complex and intricate sounds, while its intuitive design and robust construction make it a reliable and dependable addition to any modular system.

The Doepfer A-138-B Exponential Mixer is a versatile and powerful module in the Eurorack modular synthesis world. It is designed to mix and control the level of voltage signals, which is essential for creating complex and expressive soundscapes. Let's examine some pros and cons of this module to help you make an informed decision.

1. Exponential Mixing: The A-138-B offers exponential voltage control over the mixer levels. This feature is crucial for creating complex and expressive modulation in a modular setup.

2. Multiple Inputs: The mixer offers eight input channels, which is ideal for handling multiple sound sources or modulation buses in a Eurorack system.

3. CV Control: Each input channel offers CV control for fine-tuning the level of each signal. This feature provides extensive control over the sound and allows for intricate modulation possibilities.

4. Attenuators: The module includes attenuators for each input channel, enabling precise level control for each signal.

5. VCA Functionality: The A-138-B can be used as a voltage-controlled amplifier (VCA) when a signal is patched from an output to an input channel. This versatility makes the module a valuable addition to a modular system.

1. Size: The A-138-B is a full-width Eurorack module, which might not be ideal for those with space constraints in their modular setup.

2. Power Consumption: The module consumes 125mA 12V and 140mA -12V, which is relatively high for a mixer module.

3. Price: The A-138-B is a premium module, which might be beyond the budget of some synthesists.

The Doepfer A-138-B Exponential Mixer is an excellent addition to any modular synthesis setup due to its exponential mixing capabilities, multiple input channels, CV control, and attenuators. While it comes with some drawbacks, such as size, power consumption, and cost, these aspects do not detract significantly from its overall value and functionality. If you're looking for a powerful and versatile mixer module for your Eurorack system, the A-138-B is definitely worth considering.

If you're in the market for a high-quality exponential mixer module for your Eurorack system and have the budget and space for it, the Doepfer A-138-B Exponential Mixer is an excellent choice. Its extensive control and versatility make it an invaluable tool for creating complex and expressive soundscapes in a modular setup.

part # a138b prices

• $75.73-$81.00

specifications synthesasha:

• brand: Doepfer
• model#: DOEPFER A-138B
• type: Modular Synthesizer
• manufacturer part number: A-138B

payments synthesasha:

• other
• credit card: Discover
• wallet: Paypal

shipping synthesasha:

• carrier: USPS
• service: USPS Ground Advantage
• class: Standard
• transit: 3-9 Days
• cost: $4.89
• type: Calculated

offer synthesasha:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 1
• started: July 16, 2025

general synthesasha:

• Musical Instruments Gear > Pro Audio Equipment > Synthesizers
• condition: Used

returns synthesasha:

• policy: No Returns

seller synthesasha:

• # reviews: 109
• rating: 100.0%

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