High quality magnetic core with high magnetic permeability and low coercivity High temperature resistant lead wire, flame retardant, low line resistance Thermal shielding layer reduces electromagnetic interference and aids in heat dissipation Pure copper enameled wire ensures stable voltage and supports high current output High-quality steel bracket provides secure mounting and minimizes vibration Input voltage: AC 220V Output voltage: AC 18V*2, 50W, suitable for preamplifier, 2.1 channel power amplifier, tone control board, headphone amplifier board, karaoke board, etc. Normal operating temperature range: -45C to +105C Ambient air temperature range: -30C to +40C; average over 24 hours does not exceed +35C When ambient temperature exceeds +40C, transformer load capacity decreases At temperatures below 0C, load capacity increases slightly above rated power Transformer operates normally at low temperatures down to -30C, demonstrating good low-temperature performance Maximum relative humidity recommended: up to 90%; monthly average should not exceed 75% In high-humidity environments, use a waterproof transformer (IP68 rated), which can operate submerged in water for extended periods No altitude restrictions for installation Note: Output wire color may vary between batches; please refer to actual product Color: As shown Material: Metal Package Contents: 1 x Transformer Packaging includes only the items listed above; other accessories are not included Note: Lighting conditions and display settings may cause slight variations in color between image and actual product Measurement tolerance: 13 cm