The Rolls PM50s mixes a stereo line-level Monitor signal with a mic level XLR microphone signal to a set of headphones or earphones. It has a monitor level control, mic level control, mic pass through XLR jacks, two headphone output jacks, and a stereo TRS 1/4" monitor input jack. Possible users may be drummers who need to hear a click track, or choir singers who need to hear themselves. The power adapter is included.

• XLR mic in and pass through
• Ground lift on XLR thru
• Mono or stereo 1/4" monitor input
• 1/4" and 1/8" headphone outs
• High output level

• Max Input Level: -20 dB XLR, 40 dB monitor
• Output Impedance: 10 Ohms
• Gain: 15 dB 1/4", 50 dB XLR
• Bandwidth: 20 - 20 kHz
• S/N Ratio: 90 dB
• Power: 9 - 18 VAC/DC
• Dimensions: 3" x 2.5" x 1.25" (7.6 x 6 x 3.2 cm)
• Weight: 1 lb. (0.45 kg)