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Bastl Kastle 2 Alchemist Patchable Hybrid Synth

Bastl

£165.00
In stock
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Manufacturer's description

Kastle 2 Alchemist is a patchable hybrid-synthesis based instrument that empowers you in discovering melodies and even harmonies despite being monophonic. Patch programmable sequencing via the control signals into the two PITCH MOD inputs opens up a world of melodic inspiration beyond classic arpeggios while staying in your preferred SCALE.

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.

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!

Make it fun

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

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 user-programmable RHYTHM patterns via web-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)

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
  • USB-C (firmware updates, USB MIDI, editor features)
  • 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.

How much is my shipping?

Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK, 'next working day' shipping is free if the order value is over £150, and £5 otherwise. We can also ship on a 'next working day before 12pm' service, which costs £6 for orders over £150 and £7.50 for orders under £150.

Shipping to mainland EU typically costs between £7 and £20, depending on the shipping method and the size and weight of the order.

Do you ship to my country?

Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.

Shipping methods

We use a combination of DPD, Royal Mail and Parcelforce for the UK, and for international orders it's either DHL, FedEx, UPS, Royal Mail or Parcelforce depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.

Dispatch times

For UK orders, we aim to dispatch the same working day if we get the order before 16:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.

For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes the couriers may come to collect a little earlier than scheduled which would also push an order into the next day.

Saturday/Sunday shipping

If you're in the UK and you order before 16:00 on a Friday then we can send something for a Saturday or Sunday delivery with DPD. This is FREE for order values over £350, £5 for order values between £75 and £250, and £7 for order values under £75. (NB: this applies to UK mainland addresses only). Please note that any orders placed after 16:00 on a Friday will ship on the Monday.

International shipping times

Since April 2020, the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer. There is absolutely nothing we can do about this, unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.

Pre-orders

If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.

If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.

Product Overview

Manufacturer's description

Kastle 2 Alchemist is a patchable hybrid-synthesis based instrument that empowers you in discovering melodies and even harmonies despite being monophonic. Patch programmable sequencing via the control signals into the two PITCH MOD inputs opens up a world of melodic inspiration beyond classic arpeggios while staying in your preferred SCALE.

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.

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!

Make it fun

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

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 user-programmable RHYTHM patterns via web-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)

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

Technical Specs

  • USB-C (firmware updates, USB MIDI, editor features)
  • 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.

Shipping Details

How much is my shipping?

Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK, 'next working day' shipping is free if the order value is over £150, and £5 otherwise. We can also ship on a 'next working day before 12pm' service, which costs £6 for orders over £150 and £7.50 for orders under £150.

Shipping to mainland EU typically costs between £7 and £20, depending on the shipping method and the size and weight of the order.

Do you ship to my country?

Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.

Shipping methods

We use a combination of DPD, Royal Mail and Parcelforce for the UK, and for international orders it's either DHL, FedEx, UPS, Royal Mail or Parcelforce depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.

Dispatch times

For UK orders, we aim to dispatch the same working day if we get the order before 16:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.

For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes the couriers may come to collect a little earlier than scheduled which would also push an order into the next day.

Saturday/Sunday shipping

If you're in the UK and you order before 16:00 on a Friday then we can send something for a Saturday or Sunday delivery with DPD. This is FREE for order values over £350, £5 for order values between £75 and £250, and £7 for order values under £75. (NB: this applies to UK mainland addresses only). Please note that any orders placed after 16:00 on a Friday will ship on the Monday.

International shipping times

Since April 2020, the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer. There is absolutely nothing we can do about this, unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.

Pre-orders

If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.

If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.

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