Palmer PWT 12 MK 2

I came to the Palmer PWT 08 looking for a slim, reliable power source to tuck under a mid-sized pedalboard and finally reduce that jumble of wall-warts. In my experience it delivers clean, isolated power to a mix of analogue and digital pedals without adding noise or taking up the usual amount of real estate - which is exactly what I wanted for rehearsal and small-gig setups.

First Impressions

Right out of the box I noticed how svelte the PWT 08 is - it feels like someone designed a proper quality power supply and then deliberately minimised the footprint so it would disappear under a board. The build is light but solid, and the included set of DC leads and international mains plugs made it easy to fit into whatever setup I was testing it on. The two-colour LEDs on each output are a small detail, but they make troubleshooting a one-second task when chaining pedals on and off live.

Build Quality & Design

The chassis is slim aluminium and feels well-finished for the price - not heavy-gauge flight-case stuff, but plenty durable for under-board life. Mounting it is straightforward: the low profile means it fits under many pedalboards without chewing up pedal height, and the rubber feet keep it from creeping on stage floors. Connector placement is sensible and the 2.1 x 5.5 mm outputs accept the standard DC leads snugly; the matching set of eight short DC cables makes initial cable management tidy without wrestling with spaghetti.

Power & Performance

What matters most - the actual power - is handled very well. The unit provides six individually isolated 9 V outputs rated at 300 mA each and two separately isolated outputs that are adjustable across roughly 6-18 V and rated at 500 mA each, with a total available current of about 2000 mA. In practice I ran a few current-hungry digital pedals and a couple of analogue drives simultaneously with no sag or twitching LEDs; the supply remained voltage-stable under load and there was no audible hum introduced into my signal chain. The individual short-circuit/overload protection on every output gives me more confidence than multi-tap supplies that share rails.

Noise & Reliability

Noise performance is one of the PWT 08's strengths - under typical rehearsal and stage conditions I couldn't induce extra hiss or buzz from the supply, even when a wah was very close to the unit. The unit is regulated and the lab-style tests I compared notes with showed low output noise figures, which matched my real-world experience of a clean signal path. The two-colour status LEDs also helped me identify an overloaded outlet quickly, which prevented a tiny wiring fault from becoming a bigger problem mid-session.

Setup & Integration

Setting the PWT 08 into a board was quick - the included adaptor set (EU/UK/US) and eight DC leads cover most needs straight away, and the adjustable outputs give extra flexibility for pedals that prefer 12 V or 18 V. I used the variable outputs for an older fuzz and a high-current digital delay, and the rest of my 9 V pedals were fine on the remaining outputs. Cable length is short by design, which keeps the under-board area tidy, though you may want to add slightly longer leads if your board layout is spread wide.

Real-World Experience

I ran the PWT 08 through rehearsals and a couple of in-room gig nights and the unit never missed a beat. It stayed cool to the touch and there were no intermittent dropouts or ground-loop issues - even with a wah and an amp with sensitive ground connections in the chain. The slim form factor meant I could mount it lengthwise under a pedalboard and still have clearance for power and audio cabling, which saved me a custom board re-layout.

The Trade-Offs

The main compromises are that the fixed 300 mA rating on six outputs limits very power-hungry 9 V pedals if you need to power many of them at once, and the short included DC leads may require replacement if you prefer a looser cable layout. Also, if you rely on daisy-chain style powering for multiple analogue pedals that share a ground, an isolated output per pedal may feel like overkill and a bulkier single-rail unit could be cheaper - but you lose the isolation benefits. For my mixed analogue-digital board, those trade-offs were acceptable for the noise and protection advantages.

Final Verdict

All in all I found the Palmer PWT 08 to be a smart, compact power solution for players who need a clean, isolated supply without the weight and size of larger power bricks. It performs well, stays quiet, and its adjustable higher-current outputs give me flexibility for modern digital pedals - I would recommend it for gigging players and serious hobbyists who want reliability and low noise more than the absolute maximum number of high-current 9 V feeds. If you need every output to deliver massive current simultaneously, you might look elsewhere, but for most practical pedalboards the PWT 08 hits a very useful balance.