MATRIXSYNTH

Simmons SDSV Drum Analog Synth SN 001714

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Sequential Circuits Tom - Vintage Digital Drum Machine

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Korg KR-55 - Vintage Analog Drum Machine SN 365079

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"Functionally everything works, except the Tom Tom/Conga circuit produces a slight hum in the audio. If you turn down the Tom volume, it removes the hum, and none of the rest of the sounds are affected.

Otherwise, all the knobs are working and not scratchy, the buttons perform their functions, and the switches and LEDs are all immediately responsive. The trigger output is also working..."

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Yamaha MR10 - Vintage Analog Drum Machine SN 29062

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"The drums sound clear and loud, and the buttons, knobs and lights are all immediately responsive. The pads are good for the most part, but I do get some double triggers from them at times.

The battery compartment is clean, and the MR10 will run off of 6 AA batteries or the appropriate power supply (9V - 12V DC, tip positive). However, neither power source is included in the sale, so you'll have to make provisions to power the unit..."

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ELECTRO HARMONIX RHYTHM 12 - Rare Vintage Analog Drum Machine

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" All functions work, but this Rhythm 12 has a strange issue with noise on most of the patterns. Beats 5, 7 and 12 are totally clean and loud, but the rest have a bothersome noise on them.

The included power supply is non-original, but built by Dunlop, and is voltage and polarity correct. The unit requires a fairly rare 18V DC power supply.

Hopefully someone can still make use of this cool little drum box, or better yet, restore the unit to perfect condition. The sound of the Rhythm 12 is really quite quirky and unique, and it would make a great addition to any rare drum machine collection..."

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Univox SR-95 - Vintage Analog Drum Machine

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Keio Mini Pops Junior - Rare Vintage Analog Drum Machine, Korg

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SN 770041

"The drums sound clear and loud, and the switch, buttons and knobs are all immediately responsive. Even the tempo light is working..."

ELI CompuRhythm CR-7030 - Rare Vintage Analog Drum Machine

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"This auction is for a rare ELI CompuRhythm CR-7030 in excellent cosmetic and fully working condition. There are a few blemishes from normal use, but nothing major. (See pictures for details.) Oddly, there is a bit of transformer whine, but it goes away if you lean the unit backwards about 20 degrees or so. This is a physical whine, and not present in the audio at all.

It's definitely a vintage unit and needs a gentle touch, but all the knobs are working and not scratchy, the buttons perform their functions, and the switches and LED are all immediately responsive..."

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Maestro MRQ-1 - Rare Vintage Analog Drum Machine

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"The drums sound clear and loud, and the switches, buttons and knobs are all immediately responsive. The power light is also working. The only issue is that the speaker cone rattles with low frequencies. It probably needs to be replaced, but this is likely not an issue if you plan to record the drum machine from its line output..."