High quality magnetic core with high magnetic permeability and low coercivity High temperature resistant lead wire, flame retardant with low line resistance Thermal shielding layer reduces interference and aids in heat dissipation Pure copper enameled wire provides stable voltage and supports high current output High-quality steel bracket ensures secure fixation and minimizes vibration Input voltage: AC 220V Output voltage: AC 18V*2, 50W, suitable for preamplifier, 2.1 power amplifier, tone board, headphone amplifier board, karaoke board, etc. Normal operating temperature range: -45°C to +105°C Ambient air temperature range: -30°C to +40°C; average over 24 hours does not exceed +35°C When ambient temperature exceeds +40°C, transformer load capacity decreases At temperatures below 0°C, load capacity increases slightly above rated power Transformer operates normally at low temperatures down to -30°C, demonstrating excellent low-temperature performance Maximum recommended relative humidity: up to 90%; monthly average should not exceed 75% In high-humidity environments, a waterproof transformer is recommended Waterproof transformers have IP68 protection rating and can operate continuously when submerged in water No restrictions on installation altitude Note: Output wire color may vary between batches; please refer to actual product Color: As shown Material: Metal Package Contents: 1 x Transformer Only the items listed are included; other accessories are not included Note: Lighting conditions and display settings may cause slight color variations between the image and actual product Measurement error allowed: ±1–3 cm