Can I send you my synth for repairs/mod install?

Receiving a synthesizer via post and sending it back again sounds very straight forward. However in reality it means a lot of additional work often exceeding the time to do the actual repairs / modifications.
As always we recommend contacting a local tech instead of sending us your synth.

Here is why:

– When receiving a synth it is often not delivered to the door, but needs to be picked up from the post office. This means going by car and takes at least 30min, often more due to long waiting times in the post office. One hour is a typical duration for this task.

– If the synthesizer needs to be re-packaged, this means additional time. Of course we will try to use the package it came in, but sometimes it is nessesary to do so. If you have ever packaged a synthesizer, you will know that 30 min is a rather generous time estimate for this task.

– We can book a pick-up option for shipping the synth, so no additional time here fortunately.

If the synthesizer is sent from outside the EU, customs get involved:

– When receiving the synthesizer via DHL Express, we typically only pay customs (Sometimes we have to pay a small additional fee). Other carriers have large fees for handling import however. TNT for example charges at least 50€ for handling the import. When not shipped via an express carrier, typically we need to handle customs ourselves. This means filling out paperwork driving to the customs office (which is quite far away) waiting in line, eventually paying customs duty and having to drive back again. Three hours is a realistic time for these tasks.

– Finally, when exporting to a country outside the EU, additional fees may apply due to complicated export paperwork. This is true for all shipments with a value greater than 1000€. We use an agent for this and he charges 45€. Please note that if we claimed a lower value, it would not only be illegal, but it would also mean your shipment is not insured properly.

– It is possible to import goods ‘for repairs’ and this way getting back the customs duty paid on import. It means however a substantial amount of additional paperwork, often offsetting the cost of customs duty.


On holiday until the 21st August. Shipping will continue, but support may be slower. In urgent cases please write to Alex(ät)tubbutec(döt)de, shipping related questions to shipping(ät)tubbutec(döt)de

TR606 UniPulse Installation

Buy uniPulse in our shop!

uniPulse TR-606 features

  • Full velocity control of all 7 voices
  • Six (6!) additional sounds (An 808ish deep clicky bassdrum and a higher pitched one, Only Snare Noise, Only Tom Noise, Each half of Cymbal (the hitting sound and the decaying sound))
  • Midi clock input. Clock is also sent to external din-sync devices.
  • Midi controlled Open hihat decay
  • Midi controlled hihat and cymbal length
  • You can install an additional midi socket, or use the existing DIN-Sync socket

After installation you can trigger the following instruments on midi channel 10:
BD: 36
SN: 39
LT: 46
HT: 48
CY: 49
OH: 46
CH: 42

and the extra sounds:
Bassdrum 2: 37
Deep Kick: 35
Felt Cymbal: 52
Snoyze: 40
Brush: 47
Closed Cymbal: 51

Open hihat decay CC: 19 (when counting from 1), 18 (when counting from 0)

The midi channel and the notes can be modified using our configurator tool (see below).

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ModyPoly: Control Polysix resonance

Disclaimer: While this has been tested and found to be working well,
it is not an official ModyPoly feature (at least not yet).
For this to happen we would first like to test this in more Polysixs
to see if it always works as intended.
So if you find this is not working properly, tell us, but don’t blame ModPoly.

The following manual describes how to use the 3rd CV output of ModyPoly (brown wire) to control the Polyisx resonance. You will need at least firmware version 1.57 for this to work. Lower firmware versions will have an inverted response with full resonance at startup.
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Juno-66, ModyPoly, SH-1oh1 midi output configuration

Double midi, phasing, as-played, as-sounds, channels, loop

Tubbutec synth upgrades have two midi output channels: An as-sounds channel and a as-played channel.
While this is a very useful feature, and well documented in the user manuals, many people seem to be confused by this and we had to answer “bug reports” way to many times.

So here is an explanation of some common issues:
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uniPulse MK2 is here

uniPulse has been updated to a new improved MK2 version, while the price stays the same.

These are the improvements:

  • Larger output voltage range: +-15V
  • Wider supply voltage range: runs from 7V-25V, generates +-15V supply voltages internally
  • 3 additional digital outputs
  • Improved input and output protection
  • Fully compatible with uniPulse MK1
  • Comes with an external midi socket with wire and connector
  • Now also included in the kit:
    • A two-pole throw switch often needed to switch between internal and midi clock
    • A panel mount learn button which can optionally be installed

µTune: Recalibrate CV-input

Early models of µTune were unfortunately shipped with a badly calibrated CV-Input.
This only concerns you if you have one of the early models with HW version 16 or 17. And only if you have firmware version 1.00 installed.
If you have Hardware version 18 or higher or firmware 1.01 or higher, you can stop reading now.

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Individual Outputs for Korg Mini Pops 7

After installing the UniPulse in your Korg Mini Pops 7 you can also add individual outputs for each instrument.

Picture by Telharmoneum, Install by Simon Ayton

Fifteen different outputs are available, but of course you can only install some of them – for example 12 like in the picture above.


Many of the instruments are connected to the “PRE IN Bus” which is marked red in the schematic. To gain access to each instrument connected to the “PRE IN Bus”, you have to desolder one pin of each resistor connected to it. Leave the other resistor pins connected.
It is not too easy to find the resistors on the board itself so numbered the spots where you have to desolder the pins.



Pre-in connections – overview

Pre-in connections 1 – 7

Pre-in connections 8 and 9

1 – 47k (Rim Shot)
2 – 33k (Claves)
3 – 82k (LB)
4 – 330k (SB)
5 – 100k (Conga)
6 – 82k (CB)
7 – 68k (CB)
8 – 680k (SD1)
9 – 470k (SD2)

Now solder the jack’s signal pins to the resistor pins.We used switched jacks. This way the instruments will be connected internally when nothing is plugged in.

Note that the 68k and the 82k of the cowbell have to be soldered together, unless you want to have both parts of the CB sound available independently.


However not all instruments are connected to PRE IN.
The following instruments just need a direct connection from the board to the sockets: TAM, GUI and QUI. The solder points are marked below.
schematic-instruments_percussionboard_rueckseite_percussionBase Drum, High Hat, Cymbals

Originally the base drum, high hat, cymball and the percussion instruments are mixed together. To separate the instruments you again have to desolder several resistor pins as marked in the following pictures. The spots where the cuircuit is opened are marked by two black lines. Once again you have to use switched jacks to close the circuit as long as no male jacks are inserted.

1 – 47k (BD)
2 – 330k (HH)
3 – 47k (CY)

Solder wires from the desoldered resistor pins to the socket’s tips and from the socket’s switch contact back to where the resistors were connected originally (marked in the picture above).


All output sockets need a ground connection. Any point labelled GND on the board will do.

The final result could look like this (image by Telharmoneum, thank you very much!)