SST Ambrosia 2000 and Ampzilla Monos - As Traded
SST Ambrosia 2000 and Ampzilla Monos - As Traded
SST Ambrosia 2000 and Ampzilla Monos - As Traded
SST Ambrosia 2000 and Ampzilla Monos - As Traded
SST Ambrosia 2000 and Ampzilla Monos - As Traded

SST Ambrosia 2000 and Ampzilla Monos - As Traded

$15,000.00

SST Ambrosia 2000 and Ampzilla Monos - As Traded

Condition: Excellent

A total of about 10 man-years of development effort has gone into the Ambrosia, and as you will shortly find out, it indeed represents a complicated and ambitious undertaking. The Ambrosia is intended as a full function preamplifier, and to paraphrase Vinny Gambini (My Cousin Vinny the movie), I'm sure you'll be ‘mooore' than satisfied with its functionality. For starters, separate MM and MC phono stages are included. Each phono circuit has its own switchable and dedicated low cut 20Hz filter featuring a quasi fourth order phase-equalized network.
The line amplifier is fully balanced and uses JFETs and Analog Devices AD797 opamps in a topology that is said to generate essentially zero distortion. The line amplifier incorporates sophisticated bass and treble tone controls with four selectable inflection points. Tone controls?! Now that's something you almost never find in a high-end preamplifier, and I totally agree with Bongiorno that it's an indispensable feature in tuning one's system, since as he points out, "there is no such thing as a flat room." In addition, I might add that fine-tuning a speaker's tonal balance is also a possibility, especially critical in the frequency range below 300 Hz where so many modern designs are anemic sounding. Finally, since Bongiorno is big on headphone listening, expect no less than a pair headphone jacks on the front panel which can deliver several hundreds milliwatts into even very low impedance cans. The headphone driver is very good; my Grado RS-1 cans were driven cleanly and with plenty of headroom.

There are plenty of unbalanced inputs, two balanced inputs, and two tape loops. Both RCA and XLR output jacks are provided. This is a heavy chassis; at 50 pounds, it outweighs many power amplifiers, including the Son. Most of the weight is due to a huge low EMI power transformer mounted in its own can. It features four secondary windings that are used to power each circuitry section independently, and in the process eliminate ground loops. In addition, 15 independent power supply regulators are employed throughout for immunity against AC mains fluctuations. The level of finish is superb: all metal surfaces, including the front panel, are powder coated. All of this is clearly fitting for a device that references Greek mythology. Ambrosia, the food of the G-ds, was thought to confer immortality, and in this context, presumably celestial sonic delight.


The Ampzilla 2000 uses a completely new variation of the Forward Gain topology to achieve unprecedented improvements in linearity. As a matter of fact, the new circuit is so smooth, that it can be actually listened to OPEN LOOP, WITH NO FEEDBACK. Of course, we aren’t going to make it that way. The PROPER use of feedback is necessary in order to tie down all of the operating points so there will be no variations in performance from unit to unit. The new Ampzilla 2000 uses 12 250-watt output devices per monoblock. This is 3 times more devices than the original Ampzilla. In addition, since it is a monoblock, there is a separate 2000VA transformer for each. In addition, the amount of heat sink radiating area is 3 times greater than the original meaning that there is NO fan. Also, the B+ and B- supply fuses are EXTERNAL. Also, The entire circuit is totally balanced from input to output although there is a totally and uniquely new un-balanced to balanced converter for single ended inputs. Each monoblock has 100,000 ufd of power supply filtering with dual rectification as pioneered in the original Sumo’s.
The nominal specifications are as follows and are very conservative:
Power output –300 watts into 8 ohms at less than .05% of any kind of distortion known to man.
 
Frequency response– +/- .1db at any power level from 20Hz to 20kHz.
 
Rise time – less than 2usec at any power level up to rated output
 
Hum & noise – Better than –110db below full output
 
Gain – Balanced inputs – 42x (32.5db) with +/- 1 volt RMS input
 
Unbalanced 42x(32.5db) with 1 volt RMS input
 
Load capability – will drive any load conceived by man