The Yamaha SPX90 is a legendary digital multi-effects unit first released in 1985. There are later iterations with improved noise floors, stereo inputs and increased bandwidth, but the original SPX90 remains the most sought after model.
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The DP/4+ sounds incredible. It's well sort after, and often hard to find in the UK. I suspect a simple fix to get this back to full working order. There is an occasional buzz in the audio, especially after initially turning it on, which seems to change pitch on its own and while applying a little pressure to the top casing.
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Delay + Reverb. Chorus + Reverb.
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T.c. electronic Powercore Firewire. rack-mountable digital DSP signal processor. In excellent working order.
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Alesis Quadraverb GT Digital Effects Processor - with power adapter
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Aqualisa Digital Processor. For HIGH Pressure / COMBI Boiler water systems only. NOT GRAVITY. Ensure that this is the correct processor/shower for your plumbing system.
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SUPERB AQUALISA PUMPED A2 DIGITAL PROCESSOR. MODEL: 434100. - Aqualisa digital processor for use with quartz smart valves. - Genuine Aqualisa spare part. - For gravity pumped system. NOTE: FOR GRAVITY FED LOW PRESSURE SYSTEMS ONLY, NOT FOR USE WITH MAINS PRESSURE OR COMBI BOILER PLUMBING SYSTEMS.
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The device that separates the audio signal is located before the power amplifier. After frequency division, the independent power amplifier is used to amplify the signals of each audio frequency band, and then send them to the corresponding speaker units.
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