Great sound makes for a great performance. So hear every detail with the Samson QH4 4-Channel Headphone Amp. Designed to give a personalised mix to every musician youll get incredibly clear foldback on stage and in the studio. Powerful practical and professional. The QH4 lets you tailor each mix with individual volume control on every channel. Correct phase issues on the fly with the Mono downmix switch. The QH4 does all the work; all you have to do is bring the talent. Connection made easy. Need more than four channels? No problem. With the QH4 you can daisy chain several headphone amplifiers via the 1/8" AUX output. Whether youre a full band orchestral ensemble or anything in between youll get clear defined audio just how you like it.