502P

About the 502P

The Jolida 502P is a stereo tube power amplifier rated at approximately 50 watts per channel at 8 ohms, with a maximum output of 75 watts per channel at 8 ohms. It features RCA and balanced XLR inputs, ultra-linear Class AB circuitry, and a frequency response from 8Hz to 130kHz at 1 watt. The amplifier uses 2 matched pairs (4 tubes) of EL34/6CA7 power output tubes, along with 12AX7A/ECC83 pre-amplifier tubes and 12AT7/ECC81 power driver tubes. It has been factory-modified with upgraded clarity capacitors, resistors, and high-speed diodes to enhance sound quality. The amp weighs approximately 39 pounds and measures 17 inches wide by 15 inches deep by 7.5 inches high. It supports tube rolling, with users commonly installing KT120 tubes for increased power and reliability. The amplifier is praised for its warm, stable sound with a huge soundstage, suitable for both vinyl and digital sources. It includes a two-year limited warranty on parts and labor, with a one-year or 1000-hour warranty on tubes. The unit requires 110-120 VAC at 50Hz, consuming 180 watts in standby and up to 450 watts maximum. Bias settings are adjustable, typically around 400 millivolts ±50 mV. The Jolida 502P is considered a top-flight tube amplifier offering excellent value and sound quality for its price range.