rack-mount version). These slots allow the user to augment the instrument's soundset through the purchase of Yamaha PLG Expansion Boards. The MOTIF Classic featured 4MB of onboard sampling RAM, which could be increased to 64MB with the purchase of third party memory sticks. External connectors include a FireWire 400 port for connecting an mLAN network card; a USB 1 port for connecting the instrument to a computer via a MIDI cable OR for external storage; and a SmartMedia port for storing sequence, voice, and sample data (which requires a third-party SmartMedia card). MOTIF ES AWM2 Tone Generator (complying with the Modular Synthesis Plug-in System) 128 note polyphony 226,000 note MIDI sequencer @ 480 ppqn Audio Input ports: A/D, AIEB2, mLAN, Stereo IN Sounds: 175MB (when converted to 16-bit linear format), 1,859 waveforms All MOTIF ES synthesizers feature a selection of sounds, and use a sample-based subtractive synthesis engine. The MOTIF ES6, ES7 and ES8 feature 16 track sequencers that can use MIDI and sample tracks, and 512MB of sample memory can be fitted for completely new sounds. Physical modeling, virtual analogue synthesis, FM synthesis plus additional sample sets can be installed with Yamaha's Modular Synthesis Plug-in System (PLG boards). The ES models featured several improvements over the original MOTIFs, including twice the polyphony with faster envelopes, a DSP effects engine (up to 8 tracks in sequencer mode can use independent dual insert effects), USB mass storage support, 8x sample RAM expansion (up to 512 MB via twin DIMM modules), improved acoustic piano sound, and twice the storage amount for user sounds. The MOTIF ES range employs "Megavoice" technology from the Yamaha Tyros2. These samples utilise 'velocity switching', designed to enable greater natural expression over the sounds, expressions such as fret noise, hammer-ons, slides and ghost notes. MOTIF XS AWM2 Tone Generator 128 note polyphony 130,000 note MIDI sequencer @ 480 ppqn Connectors: Output L/R standard phone jack Assignable output standard phone jack A/D input Digital out (coaxial S/PDIF) Phones Foot controller 1,2 Footswitch x 2 (Assignable, Sustain) MIDI In/Out/Thru USB 2.0 to Host, to Device AC In Ethernet mLAN (XS8 only, optional for XS6, 7) Sounds: 355MB (when converted to 16-bit linear format), 2,670 waveforms Weighted Keys Some improvements over the previous ES series were: Assignable AF1/AF2 buttons (Often defaulted to control XA) Larger color display Eight faders (four more than the ES) Up to eight elements (waveforms) per voice