Marantz Model 30

100 watts per channel into an 8-ohm load
4-ohm capability
High-current double-shielded toroidal power transformer
Hyper Dynamic Amplifier Module (HDAM® SA3) and current feedback amplification
Premium Phono EQ circuit for both MM/MC cartridges
Wide-range current feedback in the preamplifier
Triple-layer chassis
Adjustable phono input stage with selectable impedance and gain
Bass, treble, and balance controls
Internal headphone amplifier