Siel Mk370 Vintage Keyboard Analogue 37 Full Size Keys

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main features:
37 fullsize keyssmall built-in speaker (a little bassless and hollow)polyphony 8 notes (only 4 notes with accompaniment, only monophonic in “counter melody” mode)4 note polyphonic chords8 semi- OBS preset sounds {piano, strings, brass, organ 1 | harpsi, clarin., celesta, organ2} selected by locking buttons + select button.8 semi- OBS preset rhythms {waltz, tango, rock, bossa | swing, ballad, disco, samba} selected by locking buttons + select button.locking multi- contact push button switches for most functionssustain switchsingle finger chord”chord memory” switch (means simply that chord is held when releasing keys)2 accompaniment variations per rhythmtrio mode (labelled “counter melody”)arpeggiofill-in buttonmetronome effect (replaces rhythm)tempo knobseparate rhythm and accompaniment volume knobsMain voice timbres are analogue filtered multipulse squarewaves with capacitor envelope.main CPU(?) “SGS M3872GFB1, MCU 4K, 28527” (40 pin DIL) + sound chip “SGS M11B1, 28445″analogue percussion {base, snare, open & closed hihat, woodblock}; cymbals and snare are made from white (transistor?) noise.tuning trimmerdemo “When the Saints Go Marching In” (normal version followed by a jazzy improvisation)jacks for AC- adapter, sound output & serial in/out jack (with “TR-RC” switch)
in really good nick for its age all working fine and tested
Siel Mk370 Vintage Keyboard Analogue 37 Full Size Keys. Condition is Used.

Category: Musical Instruments:Keyboards and Pianos:Electronic Keyboards
Location: Manchester