... , clear indication, easy manipulating for nonprofessionals.2. The digital power amplifier features best sound, high efficiency and high reliability.3. Complete ... , over temperature frees users from worry of malfunction.4. The amplifier can be configured three output modes, stereo, mono and bridged ... 1pcs to 7pcs in a standard rack as you like,if 7 pcs combined, max power can reach 8Ω 300w x ...