No Image
AmplifiersHeadphone AmplifiersPre-AmplifiersDiscontinued
Estimated price (community-sourced)
$100
Around — community and catalog average, updates slowly
About the Magni 3+
The Magni 3+ is a desktop headphone amplifier with a fully discrete, complementary current-feedback design, a driver stage, and a Vbe multiplier. It provides a single pair of RCA inputs, a front-panel headphone output, and RCA preamp outputs that are switched with the headphone jack. A rear switch selects low or high gain; a muting relay provides delayed startup and quick shutdown. It uses an external AC power adapter and is designed and built in California.
Specifications
Type: Desktop headphone amplifier / preamplifier
Topology: Fully discrete, fully complementary, symmetrical current-feedback design; driver stage and Vbe multiplier
Frequency response: 20 Hz–20 kHz, ±0.04 dB
Maximum output power (per channel): 2.8 W at 16 Ω; 2.4 W at 32 Ω; 1.6 W at 50 Ω; 410 mW at 300 Ω; 215 mW at 600 Ω
Gain: Selectable, 3 dB (low) or 18 dB (high)
THD+N at 1 V RMS into 32 Ω: <0.0013% (high gain); <0.0005% (low gain)
Signal-to-noise ratio: >104 dB (high gain); >115 dB (low gain), A-weighted, referenced to 1 V RMS
Crosstalk: <−70 dB, 20 Hz–20 kHz
Output impedance: <0.2 Ω
Inputs: Stereo RCA
Outputs: 6.35 mm (¼-inch) headphone jack; stereo RCA preamp outputs
Power: External AC adapter