7 vs Quad II Classic
The II Classic's power @ 8ω is 25W against the 7's 20W, its signal-to-noise 90 dB against 80 dB, its thd 0.600% against 0.100%, and its class A against Tube.
Both turn up in the same documented systems.
AI-generated product photo — not official manufacturer imagery.
AmplifiersPre-AmplifiersTube AmplifiersDiscontinued
Estimated price (community-sourced)
$5,999.50
Around — community and catalog average, updates slowly
About the 7
The Marantz Model 7 is a classic stereo vacuum-tube preamplifier designed by Saul Marantz. Its three-stage phono circuit—using six ECC83/12AX7 tubes, three per channel—became known as the “Marantz circuit.” The front panel provides two phono inputs, two tuner inputs, microphone, tape-head, auxiliary and TV inputs, along with source selection, volume, balance, stereo/mono operation and tape monitoring. Separate stepped tone controls are provided for each channel, and selectable phono equalization supports RIAA, old Columbia LP and early 78 records. Published specifications include a frequency response of 20Hz–20kHz ±0.5dB, approximately 80dB phono signal-to-noise ratio, 64.5dB phono gain and 22.5dB high-level gain. The Model 7 is a preamplifier and does not contain a power-amplifier section.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 20W @ 8Ω
- Amplifier Class
- tube
- Minimum Impedance
- 4Ω
Analog Output
Analog signal output specifications
- THD
- 0.100%
- SNR
- 80 dB
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- Microphone, Phono 1, Phono 2, Tape-head, FM-AM, TV, Auxiliary
- Analog Outputs
- Unbalanced
Key Specifications
Power: 20W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions