Azden IRR-30P 2-channel receiver w/power amplifier Sub-carrier frequencies 2.06MHz & 2.56MHz Type Super heterodyne - crystal controlled Modulation FM Signal-to-Noise >75dB A weighted Reception sensitivity >25db/V Line Input impedance 32K ohms ±15% Line Output adjustment -∞ ~ +10dBu Audio Output 5W x 4 @ 4 ohms Power requirement 15VDC @ 2.7A(use model BC-30) Size 8.03''W x 9.19'' D x 1.73'' H (204 x 233 x 44mm) Weight 2.86lb(1.3kg)