An integrated amplifier (pre/main amp) is an electronic device containing an audio preamplifier and power amplifier in one unit.
Linear Tube AudioZOTL10 integrated amplifier
Transformerless ZOTL stereo tube amplifier
“The Linear Tube Audio Z10 is a very special amplifier, and one I won’t soon forget. It combines the allure of tubes with the precision of a solid-state amp.” Steve Guttenberg / CNET
“I would put the Z10 Integrated up against anything I’ve ever heard with a high degree of confidence.” Audiogon: User ghasleyDetails