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  • November 8, 2023 at 1:35 pm #206338
    linuxsat
    Participant

    Hello,

    I will play in a near future on a Matamp GT 2 Amp. It feature a passive effects loop (an insert between the preamp stage and the power amp stage, I suspect).

    May I use a Switchblade Pro to turn the loop in an active one using the following scheme:

    (send of loop amp) -> Input of SBP / output of SBP -> (return of loop amp)

    my pedals would then be inserted in the A and B loops of the SBP ?

    Thanks

    November 9, 2023 at 9:17 am #206345
    EHX STAFF
    Keymaster

    We are not familiar with the Matamp or its effects loop but it should work.
    You may want to reach out to Matamp and ask them how their loop works with guitar pedal impedance.
    Here are the specs for the Switchblade pro:

    INPUT Jack – This 1⁄4” jack is the audio input of the SWITCHBLADE PRO. The input
    impedance is 2.2MΩ. This input will accept any audio source that is instrument or line level
    up to 4.2Vp-p without clipping.

    SEND A Jack – This 1⁄4” jack is an audio output of the SWITCHBLADE PRO. Connect this to
    the input of the effect(s) you want in FX loop A or send it to the input of an amplifier. The
    output impedance is 220Ω.

    RETURN A Jack – This 1⁄4” jack is an audio input of the SWITCHBLADE PRO. Connect this
    jack to the output of the effect(s) you want in FX loop A. This jack can also accept another
    instrument output. The input impedance is 90kΩ.

    SEND B Jack – This 1⁄4” jack is an audio output of the SWITCHBLADE PRO. Connect this to
    the input of the effect(s) you want in FX loop B or send it to the input of an amplifier. The
    output impedance is 220Ω.

    RETURN B Jack – This 1⁄4” jack is an audio input of the SWITCHBLADE PRO. Connect this
    jack to the output of the effect(s) you want in FX loop B. This jack can also accept another
    instrument output. The input impedance is 90kΩ.

    A LEVEL Knob – Controls the volume of signal going into the RETURN A jack. Unity gain is
    achieved with the knob at 12:00. Turning this knob fully clockwise achieves a gain of 6dB.

    DRY LEVEL Knob – Controls the volume of signal going into the INPUT jack. Unity gain is
    achieved with the knob at 12:00. Turning this knob fully clockwise achieves a gain of 6dB.

    B LEVEL Knob – Controls the volume of signal going into the RETURN B jack. Unity gain is
    achieved with the knob at 12:00. Turning this knob fully clockwise achieves a gain of 6dB.

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