Massdrop x Alex Cavalli Tube Hybrid Headphone Amplifier
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Contents: Amplifier, Power Supply, electron tube, Cloth Storage Bag, box.
New Opened Box Condition.
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Built from the ground up by Alex Cavalli, a legend in the world of headphone amps, this hybrid amp combines a solid state section, a tube amp section, and an entirely new circuit design. It delivers the current required by planar magnetics, along with the voltage drive that dynamic headphones need to perform their best. It’s quiet enough for sensitive headphones like the Massdrop x Fostex TH-X00 and powerful enough for higher-impedance headphones like the Massdrop x Sennheiser HD 6XX. With the supplied 6922 vacuum tube, the sound is smooth, natural, and resolving with precise detail and just a touch of tube character.
- Massdrop x Alex Cavalli
- Chassis: High-grade CNC-milled aluminum with bead-blasted finish, silicone pads on feet
- Frequency response: 20 Hz–20 kHz, -0.2 dB
- Maximum power, 50 ohms: 1W Rms per channel
- Output impedance: < 0.5 ohm at 1 kHz
- THD: < 0.008%, 20 Hz–20 kHz 1 Vrms
- THD: 0.0014% at 1 kHz, 1 Vrms with 50R load
- IMD: 0.002% CCIF 1 Vrms
- SNR: -97 dB, 20 Hz–20 kHz (1 Vrms into 45 ohms)
- Crosstalk: -85 dv at 1 kHz
- Topology: Capacitor-coupled tube hybrid using 6922 tube, single-ended
- Gain: 8x (18 dB)
- Input: RCA
- Output: 4-pin XLR, ¼ in (6.3 mm) TRS headphone jacks
- Protection: Delayed start with muting relay and DC offset detection
- Power supply: Wall wart with 28V DC 1.25A
- Power consumption: Maximum 35W (28V, 1.25A), ~9W idle
- Dimensions: 8.3 x 9.1 x 2.2 in (210 x 230 x 57 mm)
- Weight: 3.6 lbs (1,625 g)