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Massdrop x Alex Cavalli Tube Hybrid Amp (CTH)

Massdrop x Alex Cavalli Tube Hybrid Amp (CTH)

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Product Description
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 Read More


  • 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)
  • Individually serialized


  • 6922 dual-triode vacuum tube
  • Cloth storage bag
  • Switching power supply that handles 100–240 VAC (add plug adapter for your country’s outlet)
  • 1-year warranty


We get it. Sometimes what you ordered just doesn’t work out. If that’s the case for you, don’t fret! All customers (both US and international) may return this item in new, unused condition within 30 days of delivery.


Estimated ship date is Dec 2, 2020 PT.

Payment will be collected at checkout. Cancellations are accepted up to 2 hours after checkout for in-stock items, or up until pre-order ships.