Low-noise linear PSUs for broadcast, studio & professional AV
Studio and AV racks are unforgiving of dirty power. Any hum, switching artefact or ground loop shows up immediately as 50 Hz buzz on a mixing console, banding on a video monitor or HF hash on a wireless mic receiver. The Mascot linear range is built specifically for this work: fully linear AC/DC with a conventional 50 Hz transformer, traditional rectifier and series-pass regulator, so the only ripple on the output is a small 100 Hz residual that's easy to filter and inaudible. The 2083 (10–24W) and 2183 (24W) plug-top series suit individual outboard, DI boxes and small wireless receivers; the 8421 (36W variable 5–15V or 12–30V), 6823 (1A linear) and 8937 (5–24V) give you bench-style adjustable output for retrofits and one-off racks. For 24V studio rigs that need to derive a clean 13.5V phantom rail, the linear DC/DC 8662 (80W) and 9261 (110W) do the job without introducing a single switching edge into the signal chain.
What to look for
- Fully linear regulation - no switching stage, no broadband EMI to chase out of the signal path
- Output voltages matched to the equipment (commonly 9V, 12V, 13.5V, 24V - and adjustable variants for retrofits)
- Quiet operation: most Mascot linear units are fanless, which matters in a treated room or studio environment
- Wide AC input or interchangeable mains cords for tour rigs that cross regions
- Generous derating: a linear supply runs warm by design, so size for around 70% of nameplate continuous to keep enclosure temperature down
- Mains lead supplied (UK or EU plug variants), CE/UKCA marked
Recommended Mascot Models
Curated from our UK stock for broadcast & av use. Need help picking? Call 01189 795319 or request a quote.
Mascot 8421 12V-30V DC, 36W AC/DC Linear power supply with fixed EU mains cord and snap connectors
£120.67 + VAT£144.80 Inc. VAT
Mascot 8937 5-24V DC, 18W AC/DC Linear power supply with fixed EU mains cord and snap connectors
£89.57 + VAT£107.48 Inc. VAT
Mascot 2183 24V DC, 24W AC/DC Linear power supply with UK Plug
£51.84 + VAT£62.21 Inc. VAT
Mascot 2083 12V DC, 10W AC/DC Linear power supply with EU Plug
£31.45 + VAT£37.74 Inc. VAT
Mascot 2083 9V DC, 12W AC/DC Linear power supply with EU Plug
£36.53 + VAT£43.84 Inc. VATFrequently asked
- Linear or switch-mode for a studio?
- Linear, if you have rack space and weight tolerance. They're the quietest electrically (no switching edges) and acoustically (no fan), which matters when the rack lives in the live room. Modern filtered switch-mode supplies are fine for digital outboard and patchbays where you can tolerate a few hundred microvolts of HF ripple, but for analogue mic preamps, vintage compressors and any 1/4" hi-Z input the Mascot linear range is the safe choice.
- How do I derive 13.5V from a 24V tour rack?
- The Mascot 8662 (80W) and 9261 (110W) are fully linear DC/DC converters - 24V in, regulated 13.5V out - designed to feed a 12V studio bus from a 24V rack rail without introducing any switching noise. They run warm (linear conversion is inherently lossy) but produce the cleanest possible secondary rail.
- Can I daisy-chain multiple pedals from one Mascot linear supply?
- Yes, provided the total current draw stays below the nameplate. The 8421 (36W) at 12V gives you 3A, which is enough for a typical 8-pedal board with conservative drains. Use a quality star-ground splitter rather than a daisy chain to avoid loop-induced hum between pedals.