SA243
Vertigo Tremolo User’s Guide
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When connecting the Vertigo to a recording interface or mixer, should I used a Lo-Z
(microphone) or Hi-Z (line / instrument) input?
The Vertigo’s output will be low impedance when the effect is active or in buffered bypass mode, but
it will be high impedance when using true bypass mode and a guitar with passive pickups. Therefore,
it is recommended that you use a high impedance (Hi-Z) input on your recording interface or mixer to
avoid signal loss.
Why doesn’t the Vertigo respond to MIDI messages being sent to it?
By default, the Vertigo should respond to MIDI continuous controller messages on channel 1 (in
technical terms, this means that the lower 4 bits in the command byte of MIDI messages should be
0000 in binary or 0 in hexadecimal). The Vertigo’s MIDI channel can be configured using the Neuro
App or the USB Editor Software. Channel numbers in MIDI use zero-based counting, so MIDI channel
1 is described as 0 in hexadecimal, MIDI channel 2 is described as 1 in hexadecimal, and so on,
concluding with MIDI channel 16, which is described as F in hexadecimal. A continuous controller
message starts with a hexadecimal B and is followed by the channel number (0 through F). So, the
command byte from your MIDI controller should be formatted as shown in the following table:
MIDI Channel
(Decimal)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 16
CC Command Byte
(Hex)
B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF
Each continuous controller command byte is followed by two bytes, the CC number and the value.
So, each CC message consists of a total of three bytes. If the Vertigo is not responding to MIDI, make
sure that your MIDI controller is properly configured and sending messages in the format described
above.