Package: Brand New Presonus Hp60 6 Channel Headphone Amplifier and Mixer System + (2) Presonus Hd7 Lightweight Semi-closed Back Professional Studio Monitoring Headphones PreSonus HP60 6-Channel Amplifier Headphone Amp with Talkback and A/B Input Mix. Six independent ultra low noise, high output headphone amplifiers (150 mW per channel). Two sets of stereo inputs (A and B) with balanced TRS connectors. Stereo external input point on each channel for more me with trim control. Mix control between inputs A and B. Talkback with external XLR microphone with control. Direct stereo line output on each channel. Input A: (2)  TRS balanced 10k Ohms. Input B: (2)  TRS balanced 10k Ohms. External Input: TRS stereo unbalanced 10k Ohms. Headphone Amplifier Output Power: 150 mW RMS (60 Ohms) per channel. Audio Outputs:  TRS stereo unbalanced per channel. Master Controls: Talk button, Talkback volume, Input A, Input B. Channel Controls: Headphone level, Mix A/B control, External input level, Mono, Mute. PreSonus' high-definition HD7 headphones take advantage of a patented, semi-open sound chamber to deliver exceptionally deep low frequencies with a balanced and yet powerful bass punch. Whether you're monitoring, tracking or mixing, you can expect impressive sonic performance from your HD7 headphones. High neodymium resolution drivers. Precision-tuned acoustic chamber. Extended bass response. Built tough to withstand abuse. Auto-fit head pads. Comfortable and long-lasting ear pads. 98" / 2.5m single-side cable. Optimized pressure. Lightweight