The Bastl Instruments Buddy Eurorack Stereo Mixer and Preamp is a versatile and powerful module that is specifically designed to optimize hybrid setups. With four channels, the module features two channels (A and B) optimized for eurorack sources, while the other two channels (C and D) are line-level pre-amps with stereo TRS jack inputs for connecting desktop units. The mixer also features a clean boost via the NE5532 op-amp, which delivers smooth overdrive that can be used to overdrive clean stereo signals and add more character to your sound.
One of the key advantages of the Bastl Instruments Buddy Eurorack Stereo Mixer and Preamp is that several Buddy mixers can be chained via jumper cables on the back to expand the number of channels without losing precious inputs. This means that the module is perfect for use as an effects processor, stereo mixdown module, and for external stereo sound processors with eurorack voices.
The module's input and output impedance are also noteworthy features. Channels A and B are DC coupled with 100k input impedance and gain ×2 / +6dB, while channels C and D are AC coupled with 10k input impedance and gain ×10 / +20dB. Both channels feature solder jumpers that can convert left input to right channel or vice versa, offering even more patch configuration options. Additionally, the mixer boasts a soft clipping at 10vpp on mixdown stages, which adds richness and warmth to your sound.
The power consumption of the Bastl Instruments Buddy Eurorack Stereo Mixer and Preamp is also very efficient, consuming only +12V. This, coupled with its compact size, makes it an excellent choice for modular synthesizer enthusiasts looking to optimize their setups.
Overall, the Bastl Instruments Buddy Eurorack Stereo Mixer and Preamp is a must-have for anyone looking to optimize their hybrid setup. Whether you need to boost signal levels, add character to your sound, or expand your number of channels, this module delivers exceptional functionality and versatility, making it an essential addition to any eurorack system.
Example Usage
Novice-level example:
If you're new to using Eurorack modules and line-level devices together, the Bastl Instruments Buddy Eurorack Stereo Mixer and Preamp can be a great asset to your setup. Connect your Eurorack audio signal to Channels A or B and your line-level device (like a laptop or synthesizer) to Channels C or D. Use the gain knobs to balance the levels and the high-quality op-amp to smoothly overdrive your signals. With the Buddy, you can easily mix and optimize all your audio sources without any worrying about mismatched levels.
An intermediate-level usage example for the Bastl Instruments Buddy Eurorack Stereo Mixer and Preamp is to use it as a line-level preamp to amplify the signals from external stereo sound processors and bring them back to modular levels. Connect the stereo TRS jack inputs on channels C and D directly to the output of your external stereo processor and adjust the gain to ×10 / +20dB to match the level of your eurorack sources. You can then use channels A and B to mix the amplified signals with other modular sources and apply the NE5532 op-amp's clean boost or overdrive to create interesting sonic textures. You can also chain multiple Buddy mixers with jumper cables to expand the number of channels and optimize your hybrid setup even further.
Further Thoughts
One of the great features of the Bastl Instruments Buddy Eurorack Stereo Mixer and Preamp is its ability to be used as a stereo mixdown module. This can be helpful when you have multiple voices in your setup that you want to mix together into a stereo output. Simply plug each voice into the A, B, C, or D channels of the Buddy and adjust the gain as needed. The NE5532 op-amp ensures a low-noise pre-amp and the soft zenner clipping at 10vpp on mixdown stages delivers a smooth overdrive. With the ability to chain multiple Buddies together, you can expand the number of channels and inputs without losing precious space in your setup.