Questions & Answers

Dumb question: can the Quantum 2626 line inputs (3-8) be used for instruments?

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asked Dec 10, 2022 in Thunderbolt - Quantum by morgonkanter (120 points)
Sorry for the dumb question, I want to make sure I have it right before I buy such an expensive instrument...

I have a hexaphonic guitar (one instrument TS output per string). The Quantum 2626 has inputs 1-2 are Mic/Instrument inputs, and inputs 3-8 are Mic/Line inputs. Is it possible to use inputs 3-8 for instrument inputs as well, or must they be preamped to line level first? The manual states that both go to the instrument preamplifier section, and only list the difference between them as 1-2 having TS connectors and 3-8 as having TRS connectors.

1 Answer

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answered Dec 22, 2022 by mattbennett1 (4,080 points)
edited Dec 22, 2022 by mattbennett1

From the manual "When a device is plugged into the Line input, the mic preamp is bypassed, and the signal is routed to the instrument preamplifier stage." The line inputs on 3-8 are not designed for instrument level sources. To test, I tried plugging in a guitar directly into channel 3 (mic/line) on my Studio 192 and the signal was extremely weak. While turning the gain all the way to max did boost the signal, it was still very quiet and unusable. Plugging the guitar into input 1(mic/inst), I only needed the gain at about less the half to get a strong signal. I would guess you would need to get 4 direct boxes for the other 4 outputs on your hexaphonic guitar to get good signal levels.