subsequently developed a reputation for non-roadworthiness. However, several factory updates - most notably the AutoTune Upgrade, which increases the "capture range" of the autotune circuit, allowing the instrument to tune itself more successfully – have made the Memorymoog a far more reliable instrument. Physically, the Memorymoog was extremely well constructed utilizing solid walnut cabinetry – again a nod to its Minimoog heritage - and brushed aluminum front/rear panels. Versions Shortly after its initial release of the Memorymoog, Moog Music introduced the Memorymoog Plus (or Memorymoog+) as a replacement. The Plus featured a factory-installed MIDI interface – making it amongst the very first electronic instruments to include a MIDI implementation – and a basic polyphonic and monophonic sequencer, the latter of which is used to control an externally interfaced monophonic synthesizer (via rear panel CV/gate/trigger jacks). The "Plus" MIDI/Sequencer package was also available from Moog Music as a field or factory retrofit for original "non-Plus" Memorymoogs. Much discussion has centered around the comparative playability and sonic differences between the Plus and Non-Plus Memorymoogs; notably, some Non-Plus owners insist that the original units are superior to the Plus model, as the on-board Zilog Z80 microprocessor reportedly has difficulty keeping up with the added demands of the MIDI/Sequencer circuitry, resulting in discernible latency and attack smearing. Moog also produced about 100 Memorymoogs re-branded with the name Sanctuary at the request of David VanKoevering, a longtime friend of Robert Moog and a Moog Music marketing evangelist. The Sanctuary was marketed to churches and Christian music groups. Upgrades In 1992, the German company Lintronics, in association with the then Bob Moog-owned company Big Briar, introduced the Lintronics Advanced Memory Moog upgrade (LAMM), an extensive rebuild of the original hardware and software of both stock Memorymoog versions, with claims of far greater reliability and tuning stability, achieved mainly through replacement of critical voice card components, the notoriously failure-prone multi-pin connectors, and many other parts. This upgrade also introduces a significantly improved MIDI implementation over the original MIDI-capable version, the Memorymoog Plus, which included only Note On/Off and Program Change in their original MIDI implementation, allowing the LAMM to respond to key velocity when controlled via MIDI. It further adds full MIDI control of virtually all front-panel controls, as well as MIDI sync for the arpeggiator and new arpeggiator modes. It also adds the ability to mix the various LFO waveforms. New 1/4” jacks are fitted for