3
Channel 1
3. Input Jacks
The¼-inchinputsonChannel1areoptimizedforstereoinstrumentssuchaskey-
boards and synths but mono sources can be also be used (using the left input sums the
stereo audio signals properly).
Note: When using a stereo source with a single Block amp the input will properly sum the
stereo signal.
4. Gain Control
Thelevelforchannel1isadjustedusingtheChannel1Gaincontrol.Ifthelevelistoohot,the
InputChannel1-3ClipLED(nexttothePower/StatusLED)willilluminate.Ifthisoccurs,ad-
justthiscontroluntiltheLEDstopsclippingorclipsverybrieywhenplayinghard.
Note: Boosting the tone controls also affect the level (especially the bass frequencies).
5. Tone Controls
The tone controls, Bass and Treble, cover the entire audio spectrum and can help tailor your
soundaccordingly.Eachcontrolcanboostorcutwitha15dBrangeofadjustment,thecenter
position denotes a 0 dB cut/boost.
Channel 2
6. Input Jacks
AmicrophonecanbeconnectedtoChannel2usingtheXLRjack,foraLine-Levelmonoau-
diosource,usethe¼-inchjack.it’snotrecommendedtousebothinputssimultaneously,use
only one input at a time.
7. Gain Control
Thelevelforchannel2isadjustedusingtheChannel2Gaincontrol.Ifthelevelistoohot,the
InputChannel1-3ClipLED(nexttothePower/StatusLED)willilluminate.Ifthisoccurs,ad-
justthiscontroluntiltheLEDstopsclippingorclipsverybrieywhenplayinghard.
Note: Boosting the tone controls also affect the level (especially the bass frequencies).
8. Tone Controls
The tone controls, Bass and Treble, cover the entire audio spectrum and can help tailor your
soundaccordingly.Eachcontrolcanboostorcutwitha15dBrangeofadjustment,thecenter
position denotes a 0 dB cut/boost.
Channel 3
9. Input Jacks
Channel3’sinputisoptimizedforexternalsourcessuchasdigitalmediaplayers,CDplayers
andtapedecks.The¼-inchand1/8-inchstereojacksareconnectedinparallelandshould
not be used simultaneously. It is suggested to use only one input, at a time, for best operation.
Note: Channel 3 audio does NOT get channeled through to the Line Out .
10. Gain Control
Thelevelforchannel3isadjustedusingtheChannel3Gaincontrol.Ifthelevelistoohot,the
InputChannel1-3ClipLED(nexttothePower/StatusLED)willilluminate.Ifthisoccurs,ad-
justthiscontroluntiltheLEDstopsclippingorclipsverybrieywhenplayinghard.
Channel 4
11. Input Jack
Channel4’sLinelevelinputhasbeenaddedasanextrachannelformonitoringpurposes,the
signaldoesnotmixinwiththemainbusandthustheLineOutnorLinkOutareaffectedbyit.
12. Gain Control
Thelevelforchannel4isadjustedusingtheChannel4Gaincontrol.