BIGZUN Simply Clock Scaler Eurorack Clock Divider Multiplier 4HP OLED Polyrhythm

Simply CLOCK SCALER is a 4HP Eurorack clock divider and multiplier. Feed it one clock and get two independent clocks back – each output can divide the tempo down to /128 or multiply it up to x8. Every change happens live, with one button press, and both outputs always stay locked to the same beat.

Made for live playing and generative patches: polyrhythms (/3 against /4, /5 against /7), slow Berlin School changes (/32, /64, /128) and fast subdivisions for hi-hats and arpeggiators (x2…x8).

★ FEATURES
- Two independent outputs, 20 ratios each: x8, x7, x6, x5, x4, x3, x2, /1, /2, /3, /4, /5, /6, /7, /8, /12, /16, /32, /64, /128
- Real-time control: UP and DOWN button for each output – no menu diving while you play
- Outputs always in sync: divisions count from a shared beat 1, multiplications re-sync on every input beat
- 50% gate outputs – work as gates and as triggers
- STOP/RST IN jack: START/STOP (default) or RESET mode
- OLED display: both ratios, input tempo in BPM (4-beat average) and blinking output indicators
- Three CLOCK IN sensitivity settings – from very short pulses up to 1 kHz, to noisy sources
- CAL setting to trim the BPM reading to your master clock (±3%)
- All settings are remembered after power-off

★ HOW IT WORKS
Patch a clock into CLOCK IN. Each CLOCK column has UP (faster, towards x8) and DOWN (slower, towards /128) – the new ratio starts on the next input beat. Press both DOWN buttons together to open the settings menu (CLK sensitivity, RST mode, CAL, ABOUT).

★ SPECIFICATIONS
- Format: Eurorack 3U, 4HP
- Power: +12 V only, standard 10-pin Eurorack power header (−12 V not used)
- Inputs: CLOCK IN, STOP/RST IN – typical gate/trigger signals from approx. 2.1 V, protected up to ±12 V
- Outputs: CLOCK 1 OUT, CLOCK 2 OUT – 0 V / approx. 5 V, 50% duty cycle
- Input clock: period up to 30 s; max. 100 Hz / 500 Hz / 1 kHz depending on sensitivity
- Output timing: starts within 0.1 ms of the input edge
- Display: 0.91" OLED, vertical
- Firmware: V1.1.4

★ WHAT'S IN THE BOX
- Simply CLOCK SCALER module, fully assembled and tested
- [?] Eurorack power ribbon cable
- [?] Mounting screws
- User manual: available for download on the manufacturer's website.

PLEASE NOTE
- This is a Eurorack module – it needs a Eurorack case with a power supply.
- Connect the ribbon cable with the red stripe to −12 V on both ends. The module has reverse-polarity protection, but always check the cable before powering up.
- Handmade in small batches in Poland by BIGZUN – a one-person workshop.