The Pioneer SA-8800 is a high-performance stereo amplifier with bass and treble adjustment functions. - Model: SA-8800 - Brand: Pioneer - Function: Stereo Amplifier - Speaker Connections: A/B capable - Volume Adjustment: With balance adjustment - Tone Control: Bass and treble adjustable - Power on and operation confirmed. Although detailed inspection has not been performed, there are no noticeable scratches or stains. Please refrain from purchasing if you are sensitive to used items. Returns and negative feedback are not accepted. Thank you for viewing.