Ampzilla 2000 Second Edition

Power and Grace

Monoblock amplifier


The Ampzilla 2000 Second Edition embodies state-of-the-art execution of a monoblock power amplifier. On the muscle side, the Ampzilla uses twelve 250-watt output devices and a 2000VA custom designed and built transformer for each monoblock. As well, each monoblock has 100,000µf of power supply filtering with dual rectification. Utilizing a completely new variation of our Forward Gain topology to achieve unprecedented improvements in linearity, the new circuit is so smooth that it can actually be listened to open loop without feedback.

The Ampzilla 2000 Second Edition is conservatively rated at 300 watts into 8Ω and 540 watts into 4Ω, and is stable below 1Ω. With this much power, a pair can drive the most demanding speaker loads to thunderous levels as deftly as they can whisper the most delicate notes from higher sensitivity speakers.

The entire circuit is fully balanced from input to output and includes a unique new unbalanced-to-balanced converter for single-ended inputs. The captive industrial-grade 12 gauge power cord is selected specifically for the Ampzilla and is welded on for maximum conductivity and security, eliminating the hassle or expense of aftermarket cords. The Ampzilla 2000 Second Edition also sports a second set of binding posts for bi-wiring or -amplification. In sum, this proficient powerhouse is likely the last amplifier you’ll likely ever need.

The Ambrosia and Ampzilla 2000 are by any standard statement products that can take their place among the finest amps and preamps money can buy.... If I were closing up shop tomorrow as a reviewer, I would buy them and live happily ever after.
— Paul Seydor, The Absolute Sound
This is a game changing product.... I realized that the natural comparison for the solid-state Ampzilla 2nd Edition amplifiers is not to other solid-state amplifiers, but to vacuum tube amplifiers with their natural and lifelike sound. We take for granted the tubes’ wonderful harmonic depth and realistic presentation of voices and acoustic instruments, while accepting their almost universal weaknesses in the bass and upper treble. Eliminate those weaknesses, ... and you have the Second Edition Ampzillas.
— Jerry Seigel, 10 Audio

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  • The entire amplifier circuit (except the power output stages) is contained on one main drive card which also contains the input jacks. This ensures that the amplifier is upgradeable with future circuit improvements
  • 100% stable at any load angle 0-90 degrees, capacitive or inductive, regardless of wave shape
  • Extremely capable 300 watts into 8Ω, 540 watts into 4Ω
  • Fully balanced design
  • Protection power switch/circuit breaker 
  • Four DC power supply fuses with indicators
  • All-steel 14 gauge chassis with powder coat finish
  • Front panel “Peak”, “Thermal” and “Power” LED indicators
  • Turn-on delay and surge relay protection
  • Custom-designed power transformers, constructed domestically
  • Highest quality gold plated input and output jacks
  • Gold plated internal connectors
  • Captive 12 gauge power cord with welded connectors


  • Power Rating
    • 8Ω: Minimum 300 watts, 20Hz–20kHz
    • 4Ω: Minimum 540 watts, 20Hz–20kHz
  • Input Impedance and Sensitivity
    • Unbalanced: ± 1 V RMS across 50kΩ for 300 watts into 8Ω
    • Balanced: ± 1 V RMS across ± 70kΩ for 300 watts into 8Ω
  • Frequency Response and Power Bandwidth at Rated Power
    • 8Ω: Better than ± .2 dB 20Hz–20kHz
    • 4Ω: Better than ± .3 dB 20Hz–20kHz
  • THD and IM Distortion
    • 4-16Ω less than .05% @ any power level up to rated at any frequency or combination of frequencies between 20Hz–20kHz
  • Damping Factor
    • Greater than 250 @ 20Hz
  • Noise
    • Better than -120dB relative to full rated power
  • Gain
    • 26dB (balanced and unbalanced input)
  • Weight
    • 58 lbs.
  • Dimensions
    • 14 ⅜" L x 11" W x 7 ½" H
  • MSRP
    • $4,250 ea.