Kastle 2 Alchemist

5 Synthesis Modes

The Alchemist has a carefully tuned wide timbral range spanning across 5 synthesis modes (FILTER, FM, HYPERSINE, SUPERSAW and GLITCHNOISE) accessed by main TIMBRE sweep that is refined by the RATIO control.

• The ENV macro knob affects different parts of the synth and sequencing engine to maximize musicality and it even lets you continually morph between the synthesis modes and access truly unique sounds.
• The timbral palette is further extended by the dual FX section which offers either a wide delay that will smear the arpeggios into echoed harmonies or a chorus-flanger-distortion-combfilter macro custom tuned for each synth mode.
• You can also access gliding rubber textures with the PITCH SLIDE macro that applies pitch envelope and portamento.
• You can customize its rhythms and scales with the web-based app.

A Fit for your Pocket

The Kastle 2 Alchemist is a compact, portable instrument that runs on 3‌‌‌‌‌‌‌ AA batteries or USB-C, so it can inspire you anywhere, anytime. It loves to jam with your other portable gear—sync it with the sync in/out ports, and use the audio input to mix external signals with the Alchemist’s output or run them through its built-in effects. 

Do not write melodies! Let them emerge from the behavior you set-up by the patch interaction of various modulation sources.

MODULATE ANYTHING

All main parameters can be modulated and tightly sequenced by the surprisingly powerful CV and GATE pattern generator alongside with syncable LFO that can be modulated as well.

MIDI In & Out!

The Alchemist is a semi-autonomous companion that keeps surprising you with fresh ideas. Kastle 2 is not just a sound box—it’s a powerful MIDI controller and sequencer. Send finely curated USB MIDI data to your DAW or USB MIDI instrument, and discover new ways of playing and interacting through a modular interface. The Alchemist both sends and receives USB MIDI, making studio integration a breeze!

FEATURES

▪ 5 synth modes:

• FILTER
• FM
• SUPERSAW
• HYPERSINE
• GLITCHNOISE

▪ Hybrid synthesis:

• 4 oscillators
• FM with feedback
• Raw Waveform mixing
• Ring mod
• Track and hold
• Stereo noise with track and hold
• Stereo Filter
• Transient shaper

▪ Dual FX section:

• Delay to the left
• Chorus/Flanger/Distortion to the right

▪ stereo audio processing at 44kHz/16-bits

▪ PITCH knob with range of ± 3 octaves from base note
▪ PITCH MOD attenuverter knob for modulating pitch:

• NOTE input: quantized pitch with selectable scales (updates on trigger)
• ►PLAY input: 3rd, 5th and octave above NOTE - triggers envelope on change, time quantized to PLAY GRID - great for arpeggios!
• user-defined scales via web-app
• BANK+PITCH MOD to change quantizer scale
• BANK+TIMBRE MOD for root note adjustment
• BANK+LFO MOD for fine tuning
• BANK+PITCH to change and preview octave

▪ TIMBRE knob for main timbral sweep:

• refine TIMBRE sweep with RATIO (oscillator detune ratios and wave mixing ratios)
• hit the SHIFT button to trigger the sound
• TRIGGER input to trigger sound
• TIMBRE MOD input with attenuversion

▪ MODE input with attenuation to change synth MODE with CV

▪ ENV knob:

• turn right to set decay and focuses TIMBRE on transients
• turn left to reverse add attack and decay and focuses TIMBRE on BODY
• fully left and right enters DRONE mode
• slows down arpeggio at long envelopes
• MODE MORPHING to the left
• ENV MOD input with attenuverter
• ENV MOD updates only at trigger
• patchable ENV output of the envelope

▪ LFO with triangle and pulse output, reset input, attenuverting modulation, synced or free
▪ Tempo generator with tap tempo, divider, and external clock input
▪ Pattern generator (tempo synced) with GATE and CV output, patch-programmable
▪ GATE generator contains RHYTHM patterns user-programmable via web-based app

▪ stereo input with input gain (up to +12db), accepts up to 6 Vpp signal
▪ input can be mixed at the output or run thru the built in effects
▪ stereo output capable of driving headphones up to 250 Ohm

▪ analog sync input
▪ analog sync output
▪ modular I/O connections via right channel of the sync jacks

▪ USB MIDI Input (clock, notes, CCs, pitch bend)
▪ USB MIDI Output to use as a MIDI controller/sequencer (clock, notes, CCs)

TECHNICAL DETAILS

▪ USB-C (firmware updates, sample upload, USB MIDI, power)
▪ 3x AA battery power (both rechargeable and non)
▪ power consumption approx. 100-150 mA, should last up to 15-18 hours on 3x AA batteries.

WHAT’S IN THE BOX

▪ Kastle 2 Alchemist unit
▪ quickstart guide
▪ 10 patch cables
▪ sticker
▪ for environmental reasons, we are excluding the batteries from the package

DOWNLOADS

See the product page for instructions/downloadable content.

SOUND