Custom Built Professional Electronics
Custom Built Professional Electronics
RDG&A builds custom audio equipment to the highest engineering standards and audio quality.
Here are some of the custom and short run pieces built by RDG&A.
Professional Audio
Built for industrial strength operation.
Recording Booth Audio Control
This is a Recording Booth Audio Control commissioned by a commercial recording studio. It's primary function is to control audio to headphones used in the customers recording booth. It features 3 balanced line level inputs and pushbutton select, differential and single ended outputs, high performance headphone drivers and an engineer to artist talkback function. The customer required analog VU meters and custom gain taps.
High Performance "Audiophile" Audio
These are designed to deliver the highest subjective performance - as close to a straight wire with gain as we can hear.
Custom Stereo Crossover Filter
This is a Precision Audio Crossover designed specifically for Magnepan Magneplaner Tympani 1Us. It features selectable 12 or 24 dB/octave cutoffs and plug selectable crossover points. A separate variable phase, 120Hz low pass filter section is included to pick off the last audible octaves. An off-the-shelf box was used for this chassis with dubious results. Now RDG&A builds our own boxes.
80/80W MOSFET Power Amplifiers
Fussy picture and no badge or top.
There was some question of connector spacing so this features both. The one on the left is was selected.
Generally, Power Amps should be heard, not seen, but this one is pretty
This is the working prototype and first of a series of 7 superior quality audio power amplifiers. These are based on a modified Slone MOSFET design. It has curved matched gain devices in the differential stages and output drivers The chassis is a modular construction using custom corner rails.
Part of the "Plain Jane" series of limited build Audio Components. Simple, Elegant, Exclusive.
Audio Source Control
The design is done and the circuit boards are made and tested. It's Under Construction.
Phonograph Preamps
In design phase which specifies three selectable filter curves: RIAA, Old Columbia LP and 78. There are 2 design variations in process, silicon and vacuum tube (valves).
To inquire about specifying and construction of custom electronics:
