Just be careful in using our integrated amps with power mixers as most power mixers have a very high voltage output because they are meant for pro audio systems. Kailangan lang controlled yun input gain per channel and output level. The best setting is yun zero (0) gain sa input and adjust accordingly sa output. May tawag duon sa zero db input i forgot (0dBu ata?). Pero ang resident expert natin na si Jojo tukayo ang magaling mag-explain jan with regards to setting.
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Reference level when using pro mixers is 0dBu which is approximately 0.775Vrms, this is more than enough for any home hi-fi amps.
Otoh, +4dBu is used mainly for gain structuring in studio and pro audio equipment. Most mixers/powered mixers have output capabilities for +4dBu so be very careful as you can easily overdrive the preceding stage (home hi-fi int amp, amp etc.) of your setup. Overdriven input sections can clip and cause your int amps/amps to exceed their operational limits.
Pro amps and guitar amps are exempted as they have protection diodes at the input that clamps the input voltage to safe levels. Some guitarists however, intentionally does this to make their own guitar distortion/tone.