WOW & FLUTTER METER with analog meter, frequency response from 20Hz to 20kHz. - Brand: LEADER - Model Name: LTM-3610 - Function: WOW & FLUTTER METER - Power Supply: AC 100V - Connection Terminals: DIN, RCA - Frequency Response: 20Hz - 20kHz - Meter Type: Analog Meter - Adjustment Functions: Drift Adjustment Please purchase only if you understand that this is a used item. I was using it until around January, but I no longer have the opportunity to use it, so I am putting it up for sale. Thank you for looking.