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Nemphasis Oktopus Plus Power Supply


Probably the best DC power supply available anywhere, the Oktopus Plus was created to provide a robust power supply, reliable and extremely silent, that was capable of providing stabilized DC voltages to many different sorts of effects pedals. And so, the Oktopus boasts very sophisticated features not normally found on FX power supplies.
We know that a good power supply, often overlooked, is a crucial requirement for any quality electronic device. Only after connecting the Oktopus Plus will you be able to hear how this power supply, built without compromise, brings such benefits to the sound of the effects chain.
The Oktopus Plus noise floor so low it is probably undetectable and the sound dynamics increase significantly, as well as touch sensitivity. This is thanks to the use of the best electronic components on the market and a unique modular design that allows the unit to keep the grounds that feed the individual pedals isolated from each other, thus eliminating ground loops (typical of the power supplies in parallel or daisy chain).
The rugged aluminum case provides excellent protection against the electromagnetic field generated by the internal toroidal transformer (which itself was designed for audio applications and has already reduced emissions).
The Oktopus Plus has nine separate outputs and has the ability to adjust the value of the voltage supplied from some of them to emulate that battery "sag". All outputs are protected against accidental short circuit and each channel has a LED which indicates proper function.
This power supply has the ability to feed almost all of the pedals effect on the market!
Output connections are made through isolated plug, Cliff, 2.1 mm with a negative tip while for the output n° 9 (the 18-24V) the connector  is a 2.5mm type.
Outputs 1 and 2 have parallel connectors which allows, within the current limits that can be delivered, the connection of two additional devices.
Note: By using the parallel connection the ground isolation for these outputs will be lost.

Accessories Included
For more details see the manufacturer's website here

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Nemphasis Oktopus Plus Power Supply
Nemphasis Oktopus Plus Power Supply Nemphasis Oktopus Plus Power Supply Nemphasis Oktopus Plus Power Supply Nemphasis Oktopus Plus Power Supply
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5 StarsReviewer: Madison and Fifth - Reviewer's location: Right Here

It is a bit of a cheat to put a 'review' here from the company distributing it - i.e us - but this is the very device that turned us on to the entire Nemphasis range when we saw it at NAMM. We've never seen a power supply so well thought out and engineered - its equally at home in a studio as a festival stage powering a giant rack of effects. This device gave us huge confidence in the design skills and quality of build from Nemphasis. We think you will like it too . . .

5 StarsReviewer: Paul White - Reviewer's location: Sound on Sound Magazine

My pedalboard seems to be in a permanent state of being rebuilt, and this time around I decided I needed a better power supply, as I was getting more low-level hum and whine than I was happy with. My existing regulated power supply was OK but all its outputs are essentially wired in parallel, and it was evident that some of my digital pedals were passing on noise to my analogue units via their common PSU connections. I also have one 12V pedal that has a centre-pin positive configuration, so I had to use its own supply... and that meant my old pedalboard also needed a mains distribution strip built into it. After looking at various PSUs, I decided on the Nemphasis Oktopus Plus, as it has nine fully isolated, centre-pin negative outputs, with the option of adjusting the supply voltage on all but three of them. All this comes in a robust, 300 x 157 x 46 mm aluminium case, which is strong enough to have pedals mounted directly on top of if you need to save space. Nine patch cables with Boss-compatible (2.1mm) connectors are supplied, as is an IEC mains cable. Inside the case is a substantial toroidal transformer, with separate isolated secondary windings for each of the nine outputs. These feed into a line of individual rectifiers, smoothing components and voltage regulator ICs. Separate LEDs confirm that power is present on each of the outputs (which have overload protection), and on the European model I bought the power inlet accepts a nominal 230V AC mains supply. Nemphasis Oktopus Plus Outputs one and two have fixed 9.6V outputs (compatible with most pedals), while the next two can be adjusted using trim pots from 7 to 9.6 Volts, for those pedals that seem to sound better with a slightly sagging battery. The first two outputs also each feed a pair of sockets so you can power two extra pedals, though note that these socket pairs are in parallel, not isolated. With most low–current analogue pedals this isn’t a problem. Output five is again 9.6V but offers a higher current capability of 350mA (all the previous outputs are rated at 100mA). Outputs six, seven and eight are adjustable from 9.6 to 12 V (250mA), while output nine can be adjusted from 18 to 24 V (150mA), this time via an internal trimmer. My only challenge was that I needed a centre-positive 12V feed for one of my pedals. Thankfully, as all the Oktopus Plus outputs are fully isolated, all I had to do was make a crossover cable for that particular pedal. An internal switch or jumper to achieve this on one or two of the outputs might have been preferable but it certainly wasn’t an insurmountable a problem. After hooking up all my pedals, I switched on and there was no more hum, whine or buzz other than that coming from my guitar pickups. The improvement was dramatic — and that’s about all that needs to be said, other than that my pedalboard is now also smaller, as I no longer have any need for the extra PSUs or mains distribution strips I mentioned earlier. Good pedals aren’t cheap and while PSUs aren’t particularly glamorous, it doesn’t really make sense to skimp on them, especially as many of the budget units claiming to offer isolated outputs in fact don’t.

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