Marantz 3300 (1973-1975)

Market Value: $800-$1,500 depending on condition and restoration status
Collectibility Rating: 9/10

Specifications

Feature	Specification
Year of Production	1973-1975
Power Specifications	Preamplifier only (no power amplification)
Impedance	47kΩ input impedance (phono), 100Ω output impedance
Sensitivity	2.5mV (phono MM), 150mV (high level inputs)
Key Features	Dual-mono design, separate power supplies for each channel, FET switching, phono stage with MM/MC capability, subsonic filter, loudness contour, tape monitor, dual power meters

Historical Significance

The Marantz 3300 is a preamplifier from the early '70s. It uses a dual-mono layout with discrete channel power supplies, which keeps the two channels well separated. It is built like a tank.

Sound Signature

The 3300 sounds transparent, dynamic and neutral. It has a wide dynamic range and an ultra-low noise floor, and the tonal balance stays true across the spectrum. It stays out of the way of the music and adds no coloration.

Maintenance and Restoration Tips

After 50 years, these preamps need care. Electrolytic capacitors go first, so replace them before powering up. Pots and switches often develop crackle, and deep cleaning or replacement fixes it. The dual power meters may dim or fail, so check the tiny lamps. FETs and transistors are generally reliable, but occasional failures do happen. A full service with recapping and contact treatment gets a 3300 running properly again.