Heritage Audio MIX BUDDY – Dedicated JFET Instrument Mixer with Built-In Mic Preamp Channel

OVERVIEW

Have you ever wished you could have all your synths, drum machines, samplers, instruments and even a mic mixed, processed and ready to perform or record all from one elegant desktop unit? Well… the MIX BUDDY is finally here.

Everything, Anywhere, All in the Mix

Mixing instruments both live and in the studio has always been a subpar process. Most mixers are built around mic and line inputs with generic front ends that do decent at best with electronic instruments and are frankly unacceptable with organic sources. The result is always the same: DI boxes, workarounds and tone you never quite got back.

The MIX BUDDY comes to solve all these problems while adding an additional set of features that turn this little box into a monster.

A Wolf in Sheep’s Clothing

With no-compromise tone as the main design rule, the MIX BUDDY has a staggering arsenal of no less than 19 inputs, which are themselves a masterclass of extremely low noise, high-class audiophile-grade JFET technology. Heavily based on the highly acclaimed Toshiba 2SK JFET series, MIX BUDDY marks a new milestone in instrument amplification technology.

Every single input was designed around one rule: the tone comes first. The MIX BUDDY doesn’t raise the bar in instrument amplification technology. It redraws it entirely.

Input Channel Set

• The Hi Gain Inputs: (left side, marked ⚡) Eight channels (four stereo pairs) of Toshiba 2SK JFET 12dB gain buffers, slightly colored and specifically voiced to breathe life into organic instruments and lower-level sources. Passive basses, vintage Rhodes, Moog Prodigy, Hofner Beatle bass… this is where they come alive. Push them harder, and they reward you with creamy, musical JFET saturation that adds character rather than distortion.
• The Unity Inputs: (right side) Six channels (three stereo pairs) of Toshiba 2SK JFET unity gain buffers, perfectly voiced for higher-level sources that don’t need colouration, just clarity. TR-808, TR-909, 90s samplers, active basses, modern synths… clean, fast and completely out of the way of your sound.
• The Mic Preamp: One channel of ultra-low-noise JFET mic preamp with up to 70dB of gain. Your microphone is fully processed without the need for external gear, and yes, it’s beautifully routed into the AUX effects loop for vocal pedal processing.
• The Balanced Line Inputs: (last channel on the right side) One stereo pair of balanced line-level inputs for USB audio interfaces, computers or any line-
  level source requiring a clean, professional, fully balanced, noise-free connection.
• The FX Return: Stereo pair of low-noise balanced FX return inputs, sharing the same topology as the line inputs and conveniently doubling as an extra set of stereo inputs when needed. Inserting only the LEFT channel will automatically pan the signal to the centre.

Stereo / THRU Option

Every instrument level channel on the MIX BUDDY (both Hi Gain and Unity) comes with a toggle between STEREO and MONO + THRU. A small switch with enormous consequences.
Set to STEREO when using a stereo source that requires both INPUTs, LEFT and RIGHT.

In MONO + THRU mode, the instrument stays in your MIX BUDDY mix while simultaneously being sent out to any external destination: your amp, your favourite outboard processor, the front of house desk. The THRU output is completely transparent, preserving the instrument’s natural impedance so whatever it receives, it sees the source exactly as it would without the MIX BUDDY in the chain at all.

The applications are immediate and powerful. Send your bass to the stage amp while keeping it in the mix. Capture that perfect guitar DI tone while, at the same time, feeding your amp. Run all seven instrument channels in MONO + THRU simultaneously, and you have your full mix in the MIX BUDDY plus seven independent outputs feeding external processors in parallel, opening up a world of parallel processing that would normally require a much more complex and expensive setup.

Two Stereo Outputs. One Solution. Transformer Sound.

The MIX BUDDY features two independent master outputs, both balanced.

Master Main Out runs through Heritage Audio’s own 73 single-ended class A output stage DI circuit, the same transformer-balanced DNA that has made Heritage Audio’s DI boxes trusted tools in studios and stages worldwide. A pair of custom-wound 73 DI transformers sit at the heart of this output, adding that unmistakable layer of warmth and weight that only real iron can deliver. And with a switchable line level or mic level output, you can send the MIX BUDDY directly to a console, an interface or straight to front of house without a single adapter or compromise.

Main Out 2 takes a different philosophy: transformerless, clean and fast. The purest possible representation of your mix, with nothing added and nothing coloured.

Run Master Main Out to front of house. Run Main Out 2 to your monitors or in-ears mix. Record through one while performing through the other. No splitters. No extra gear. No compromises and each with its own independent LEVEL control.

And then there is the headphone output. A powerful, independent headphone amplifier with dedicated volume control sits on the front panel of the MIX BUDDY, giving you a third independent listening path. Whether you are monitoring a live performance, checking a mix or simply listening back between takes, the headphone amp delivers the full character of the MIX BUDDY’s mix with the same uncompromising clarity you would expect from everything else in this box.

One small box doing the work of several with transformer warmth on tap whenever you need it and pure transparency when you don’t.

Creativity with Effects. Stereo FX Loop.

The MIX BUDDY’s stereo (or mono) AUX send functions as a fully featured effects loop so you can integrate your favourite hardware effects processors directly into your mix. Each channel has its own AUX send knob to dial in exactly how much of that channel feeds the effects chain, with pre- or post-fader routing selectable per channel and a global FX on/off switch for instant wet/dry comparison.

From subtle reverb or delay on a single synth to a fully processed send across your entire rig, the MIX BUDDY puts that control exactly where it belongs, at your fingertips.

And one more thing… switch the channels to PRE mode, and the effects loop turns into a true parallel processor. Your dry signal stays untouched in the mix while the wet signal handles all the heavy lifting.

A Microphone Preamp Where You Least Expect It

The MIX BUDDY includes a full microphone preamp, and all the new opportunities that come along with that.
Feed any microphone directly into the MIX BUDDY and your voice becomes just another instrument in your mix, sitting alongside your synths, your drum machines, your samplers, all controlled from the same unit. But the real magic happens when you route that vocal signal through the AUX effects loop.

Because the AUX is designed to work with instrument-level hardware, your microphone signal can be sent directly to guitar effects pedals: Chorus, Delay, Reverb, Distortion, Octave, Looper… whatever lives on your pedalboard can now shape your voice in real time. Processed, blended and mixed back into your performance with the AUX return knob, pre- or post-fader, with the global FX on/off switch giving you instant access to hear it with or without the effects.

This is the workflow that artists and producers have been chasing for years: vocals through guitar pedals, live and in context, without complex routing, extra hardware, or compromise. The MIX BUDDY makes it as simple as plugging in a microphone.

Built for the Studio. Ready for the Stage.

Whether you are producing in your home studio, performing live or recording a full synthesizer rig, the MIX BUDDY is the missing piece that brings everything together. Designed with Heritage Audio’s uncompromising attention to signal quality and built to last a lifetime.

This is not just a mixer; this is your creative command centre.

KEY HIGHLIGHTS

The first-ever instrument-centric mixer with a whopping array of 19 Ins and 8 Outs

Designed specifically around instrument-level sources, this powerful desktop mixer provides an extensive selection of inputs and outputs for integrating synths, drum machines, samplers, microphones and more into a streamlined workflow.

2 different gain input types (Hi Gain and Unity) designed from the ground up around the legendary Toshiba 2SK JFET series

Featuring dedicated Hi Gain and Unity input stages powered by Toshiba 2SK JFET technology, the MIX BUDDY delivers exceptional clarity, musical character and low-noise performance tailored to different instruments and signal levels.

Master Main Out runs through Heritage Audio’s own 73 single-ended class A output stage DI circuit, while Master Out 2 is transformerless

The dual master output design gives you the choice between transformer-balanced analogue warmth and a clean, transparent transformerless signal path for maximum flexibility in studio and live environments.

A powerful built-in Mic Preamp that combined with the AUX allows vocals through effect pedals

The integrated JFET microphone preamp opens up creative vocal processing possibilities by allowing microphones to be routed through external effects pedals via the AUX loop, delivering a workflow designed for modern artists and producers.

The MONO + THRU feature allows the customer to send any instrument to an amp while keeping it in the mix simultaneously

This innovative routing option lets you keep instruments in your main mix while sending independent signals to amps, processors or front-of-house systems, enabling advanced parallel setups from a compact desktop unit.

PRE mode turns the effects loop into a true parallel processor

Transform the effects loop into a professional-style parallel processing system, allowing dry signals to remain untouched while adding processed effects for greater creative control and flexibility.

FEATURES

• A whopping 19 x input + 8 x output instrument-centric desktop mixer with a never-before-heard clarity for instrument-level sources.
• 4 x stereo (or 4 x mono + THRU) HI GAIN channels powered by Toshiba 2SK JFET 12dB gain buffers.
• 3 x stereo (or 3 x mono + THRU) UNITY channels powered by Toshiba 2SK JFET unity gain buffers.
• Volume control, stereo/mono + THRU switch and mute per channel.
• Dedicated microphone preamp with JFET input stage, up to 70dB of gain, dedicated gain and level controls and phantom power.
• Additional stereo balanced line-level input stage.
• 2 x independent balanced master outputs with dedicated ground lift.
• Master Main Out goes through the built-in Heritage Audio 73 DI 2 active DI, and it’s switchable between line-level and mic-level output.
• Main Out 2 is a clean transformerless output.
• Stereo or mono AUX effects loop for hardware effects integration.
• Powerful independent headphone amp with volume control.
• AUX send knob per channel with pre/post fader switching.

TECHNICAL SPECS

General

Type: Instrument-centric desktop mixer with built-in microphone preamp

Inputs: 19 inputs

Outputs: 8 outputs

Input Technology: Toshiba 2SK JFET-based analogue input stages

Design: Desktop format with premium analogue circuitry

Input Channels

Hi Gain Inputs:

• 4 stereo channels (or 4 mono channels with THRU output)
• Toshiba 2SK JFET 12dB gain buffers
• Designed for lower-level and organic instruments
• Provides musical JFET saturation when driven

Unity Inputs:

• 3 stereo channels (or 3 mono channels with THRU output)
• Toshiba 2SK JFET unity gain buffers
• Designed for higher-level sources requiring clean and transparent performance

Channel Controls:

• Individual volume control
• Stereo / Mono + THRU switching
• Mute control per channel

Microphone Preamp

Type: JFET microphone preamp

Gain Range: Up to 70dB

Features:

• Dedicated gain and level controls
• Phantom power support
• AUX routing for external effects processing
• Compatible with guitar pedal effects chains

Line Inputs

Balanced Line Inputs:

• 1 stereo pair of balanced line-level inputs
• Suitable for USB audio interfaces, computers and external line-level sources

FX Return Inputs:

• Stereo pair of low-noise balanced FX return inputs
• Can also function as additional stereo inputs
• Automatic centre panning when using left input only

Outputs

Master Outputs:

• 2 independent balanced stereo outputs
• Dedicated level controls
• Independent ground lift

Master Main Out:

• Heritage Audio 73 single-ended Class A output stage DI circuit
• Transformer-balanced design
• Custom-wound 73 DI transformers
• Switchable between mic-level and line-level output

Master Out 2:

• Transformerless output design
• Clean and transparent signal path

Headphone Output:

• Independent headphone amplifier
• Dedicated volume control

Effects Loop

Type: Stereo or mono AUX effects loop

Features:

• Per-channel AUX send controls
• Pre/post fader switching
• Global FX on/off switch
• Supports external hardware effects processors
• PRE mode enables true parallel processing

Routing Features

Stereo / MONO + THRU Mode:

• Allows instruments to remain in the mix while simultaneously feeding external destinations
• Transparent THRU outputs preserve natural instrument impedance

Parallel Processing: Up to seven independent instrument outputs available via MONO + THRU routing

Physical

Format: Desktop unit

Construction: Heavy-duty build designed for studio and stage use

Applications:

• Electronic music production
• Synthesizer rigs
• Live performance setups
• Recording studios
• Hardware effects integration
• Vocal processing workflows