DOEPFER A-138BV Exponential Mixer Eurorack Circuit

( Brand: Doepfer ), ( Model: A-138BV EXPONENTIAL MIXER ), ( Type: Modular Synthesizer ), ( Manufacturer Part Number: A-138BV )

Review DOEPFER Exponential Mixer Vintage Edition Eurorack Used Perfect Circuit

The Doepfer A-138-BV Exponential Mixer is a versatile and essential module for any Eurorack modular synthesizer setup. This three-channel voltage controlled mixer offers exponential voltage summing, ensuring a smooth and even blend of voltages, particularly useful when mixing control voltages.

The A-138-BV features three fully independent channels, each with its own input, level control, and an attenuator for fine adjustments. The level control is a 12dB attenuator, providing a wide range of volume control for each channel. The attenuators are also voltage controlled, allowing for dynamic control of the input levels.

One of the standout features of this mixer is its exponential summing function. Exponential mixing ensures that the sum of the voltages maintains its initial ratio, even when the individual voltages change. This is particularly useful when mixing control voltages, ensuring that the relationship between the control voltages remains consistent.

The Doepfer A-138-BV is constructed with the highest quality components and is built to last. It has a robust metal front panel and the circuitry is mounted on a high-density printed circuit board. The module measures 14 HP and requires a 12V and -12V power supply.

The A-138-BV is an essential module for any Eurorack system, providing a smooth and even blend of voltages while maintaining the initial ratio of the control voltages. Its versatility and high-quality construction make it a must-have for any modular synthesist.

The Doepfer A-138-BV Exponential Mixer is a versatile and powerful Eurorack circuit designed for mixing and processing audio signals. Here are some pros and cons that can help you make an informed decision about purchasing this module.

1. Exponential Voltage Control: The A-138-BV offers exponential voltage control over the mix levels, allowing for more precise and expressive mixing and modulation.

2. Multiple Inputs: With six inputs and two outputs, the A-138-BV can handle a variety of sources and can be used to mix multiple signals in a Eurorack setup.

3. Attenuverters: Each input has an attenuverter, which allows for fine-tuning of the signal level before it is mixed.

4. CV Inputs: The module has CV inputs for controlling the mix levels, allowing for dynamic and expressive mixing.

5. Stereo Output: The A-138-BV offers a stereo output, making it suitable for processing and mixing stereo signals.

1. Size: The A-138-BV is a 24hp module, which can be a substantial investment in terms of space and cost for a Eurorack setup.

2. Power Consumption: The module consumes 120mA 12V and 22mA -12V, which can add to the overall power requirements of a Eurorack setup.

3. Complexity: With its many features and inputs, the A-138-BV can be a complex module to program and use, especially for beginners.

The Doepfer A-138-BV Exponential Mixer is a high-quality and versatile Eurorack module that offers precise mixing and modulation capabilities. Its exponential voltage control, multiple inputs, and CV inputs make it a valuable addition to any modular synthesis setup. However, its size, power consumption, and complexity may make it a less suitable choice for those with limited space or budget. Ultimately, the decision to purchase the A-138-BV depends on your specific needs and preferences as a synthesist.

If you are looking for a powerful and expressive mixer for your Eurorack setup and have the space and budget for a 24hp module, the Doepfer A-138-BV Exponential Mixer is an excellent choice. Its exponential voltage control, multiple inputs, and CV inputs offer a high degree of flexibility and precision for mixing and modulation. However, if you have limited space or budget, you may want to consider alternative mixer options with fewer features and a smaller form factor.

part # a138bv price

• $92.00

specifications synthesasha:

• brand: Doepfer
• model#: A-138BV EXPONENTIAL MIXER
• type: Modular Synthesizer
• manufacturer part number: A-138BV

returns synthesasha:

• method: Money back
• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

seller synthesasha:

• # reviews: 50542
• rating: 99.6%

shipping synthesasha:

• cost: $16.77
• class: Standard
• type: Fixed
• transit: 3-6 Days
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offer synthesasha:

• started: March 15, 2026
• sold: 0
• quantity: 1
• options: Ship-to-home
• availability: In Stock

general synthesasha:

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

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