FSOL Digitana Announces SX-1 Synth Price & Availability

Based on the Synthi AKS KS Expander, and made by Digitana and Future Sound of London (FSOL), the SX-1 is a powerful and unique analog synthesizer that we now know the price of.

Revealed just over a year back in April 2017, the synth collaboration between FSOL (Future Sound of London) and Digitana is almost ready to buy. The SX-1 is based on the classic Synthi AKS KS synthesizer.

The SX-1 shares all the features of the Synthi AKS KS Expander but requires no Synthi to use it.

News just in is that FSOL Digitana SX-1 will be available to order in June 2018. Having built 3 prototypes they've now been able to quote an accurate price which looks like it'll be outisde the arena of 'impulse purchase' for most producers. The SX-1 will cost £3,500 GBP + VAT.

The initial production run of the SX1 is for 25 units. FSOL & Digitana will start to take advanced orders in June. Info on how to place orders will be given directly to those people already signed up to the email list and also via the FSOL and Digitana Electronics websites.

Watch 3 videos on the SX-1 that demo its disruptive and melodic sides here.

FSOL Digitana SX-1 Features


Each VCO features sine/triangle and square waves and 'wave-folding' (voltage controlled) that adds higher harmonics/distortion to each waveform for amazingly rich and varied timbres, even unfiltered! Each VCO is frequency controllable via CV1 or CV2 which can either be external or MIDI generated from the built in MIDI-CV converter or 'free running'. The frequency range of the VCOs is very wide, from LFO to high frequency audio. Two modulating waveforms are available (speed controlled by the Sample & Hold clock or LFO) via toggle switches to modulate the wave-folding of VCO1 and VCO2. These same waveforms are also available to modulate CV1 and CV2. All VCO1 and VCO2 waveforms are individually available either 'pre' or 'post' the filter/envelope/delay/distortion sections via 3.5 mm jacks.


A Slew Limiter (SL) which acts on CV1 and CV2, with separate control over the amount of slewing applied to a rising or falling input voltage ('attack'/'decay') by front panel pots. The slew rate is switchable between linear/logarithmic response. The latter allows for long slew times. Obvious applications of the SL is adding portamento (glide) to a pitch CV. The SL also has an invert toggle switch that inverts as well as slews the input. With attack and decay levels set at zero the SL can also thus act as a standard voltage inverter.


Octave Shift is controlled by two front panel rotary switches, giving octave shifts of plus or minus three octaves, independently on CV1 and CV2.


Choice of triangle or square wave forms with variable shape. Hi/lo frequency ranges.


LF398 based S&H with variable clock (panel LED shows rate). Input source is either from the LFO or the output of the slope generator.


Triggering via gate signals g1 and g2 (which can either be external gates or MIDI generated) or by the output of the slope generator. Bypass options are on each.


Voltage controlled frequency with S&H or slope generator CV sources. Bypass options on each.


Analogue (BBD) delay section with a choice of audio inputs and voltage control of feedback via LFO or slope generator outputs.


Voltage controlled rise/fall envelope source with triggering via gates g1 or g3 (which can either be external gates or MIDI generated). Pot control of rise and fall times and levels. A toggle switch allows the generator to be in either one shot or auto re-cycle mode.


This section can overdrive the audio output of the delay section with added LFO modulation.

Price: £3,500 GBP + VAT

Available: Advance ordering in June 2018.

Web: http://www.synthi.co.uk/sx-1-stand-alone-expander/

Synthesis 101
The Filter
by Bob Moog Foundation

"Rounik is the Executive Editor for Ask.Audio & macProVideo. He's built a crack team of professional musicians and writers to create one of the most visited online resources for news, review, tutorials and interviews for modern musician and producer. As an Apple Certified Trainer for Logic Pro Rounik has taught teachers, professional..." Read More


Whoa. Was not expecting the almost 5000 USD price tag. Oh well. It looks nice.

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