Balanced XLR Source Selector BBM Switch 4×4 | Passive Audiophile Audio Router
Original price was: 415.00 €.299.00 €Current price is: 299.00 €.
Custom Passive Audio Router for RME ADI-2 DAC FS and Rega Osiris
NO STEREO CROSSTALK
NO STEREO IMAGE COLLAPSE
FULLY BALANCED STEREO SIGNAL PATH
Each left and right channel is completely independent from input to output, preserving stereo width, imaging accuracy, and channel separation without compromise. Can’t find the right controller or switcher? Tell me what you need—I’ll build it!
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Product Description
Passive Balanced XLR Source Selector – Break-Before-Make Architecture
A custom-built passive balanced audio routing system designed for audiophile and professional Hi-Fi applications where signal purity is paramount.
The unit enables safe Break-Before-Make (BBM) switching between multiple balanced audio sources while preserving maximum signal integrity. No relays, power supply, or active circuitry are present in the audio path.
Ideal for comparing DACs, analog front ends, and tube stages without introducing additional electronics into the signal chain.
Typical System Configuration – Signal Flow – see switch diagram – designed by customer – Zack Benjamin
Sources
- RME ADI-2 DAC FS
- FiiO DAC
- Pro-Ject Turntable (via balanced phono stage)
Downstream Equipment
- Cayin HA-6A MK2 Tube Amplifier
- Rega Osiris Integrated Amplifier
Signal Routing
Input Selection
Select one of three balanced audio sources and route it to two independent signal paths:
Path A
- Tube amplification stage
- Cayin HA-6A MK2
Path B
- Direct balanced bypass path
- Rega Osiris input
This configuration allows immediate comparison between tube-enhanced playback and the original balanced signal.
Key Features
- True passive signal routing
- Break-Before-Make (BBM) switching
- No relays or active electronics
- No power supply required
- Gold-plated switch contacts
- Fully balanced XLR signal path
- Excellent common-mode noise rejection
- Ultra-low insertion loss
- Transparent bypass operation
- Instant A/B comparison capability
- Hand-built studio-grade construction
Applications
- DAC comparison systems
- High-end Hi-Fi installations
- Tube vs direct signal evaluation
- Balanced analog source selection
- Audiophile listening rooms
- Mastering and reference monitoring chains
Extra-Wide Desktop Enclosure: Width 200 mm × Height 60 mm × Depth 100 mm
- *7.87 × 2.36 × 3.94 inches (W × H × D)
Applications
- Studio Monitor Control
- Mixing Workstations
- Mastering Studios
- Audio Interface Switching
- Multiple Monitor Speaker Selection
- Source Comparison and Reference Monitoring
Custom Name Engraving and select knob style (let me know)
You can get as many channels and options as you want, so let’s build your gear!
Build time: 10 Working Weekdays after cleared payment
Do not find your controller or switcher? Tell me what you need and I build for you!
| KNOB STYLE | VINTAGE WHITE, VINTAGE BLACK, ROUND BLACK |
|---|---|
| CUSTOM NAME LASER ENGRAVING? | YES PLEASE, NO THANKS |
Zack –
Excellent Solution for custom HiFi audio setup
I have a fairly complex Home HiFi stereo setup, and worked closely with Vintage Audio Maker in order to come up with a custom design solution to allow me to switch between all of my gear at the flip of a few switches. This switch along with a 2nd switch he helped design allow me to switch my Hifi speakers and amplifier between 3 different sources (2 DACs, and a Vinyl TT Setup), as well as a bypass option for my tube pre-amplifier. With everything wired and setup correctly, I can now easily switch these audio sources, and choose to route their signal through my tube pre-amp for that lovely tube sound, or bypass the tube pre-amp for a purely digital pure audio source.
Paul was easy to work with, very responsive, and offered insights on the best way to wire and set these switches up, including recommending a ground lift switch to account for the fact that one of my sources did not natively support a true 3-pin XLR format but rather used traditional RCA. This gives me the option to either ground the signal to the chassis, or pass it via the cable as normal in case I ran into a ground loop or hum issue.
After getting everything setup and wired, I can confirm these switches are of excellent quality and easy to use. Most importantly, using these swithces had zero effect on the very sensitive sound quality aspect of my fairly expensive HiFi speakers and equipment -- the sound signature overall remained identical to cabling the devices up directly which is exactly what you want to see when dealing with expensive high-end audio gear. I'd highly recommend working with him for what you need, as he can build any sort of input or output XLR switch components to your exact need, such as this switch that features 3 pairs of inputs and 2 pairs of outputs -- Such a switch simply does not exist in the OEM market.