Trilogy 993
Power Amplifier
Complementing the 903 Preamplifier.
The best design choices can only be achieved by understanding all the options.
Trilogy is in a unique position to do this; combining the best of both solid state and valve technology to produce a remarkable design that is capable of sublime musical subtlety and impressive power.
All the 993’s voltage gain is provided by a 6H6П super tube.
This Russian military triode has been selected for exceptional performance at audio frequencies, having both high transconductance and low mu.
The valve operates in Class A in a grounded grid configuration with zero negative feedback for maximum fidelity.
Power supplies for the driver stage are fully discrete and shunt regulated for excellent transient response.
Because of the output stage’s unique topology the valve has an easy load, seeing only a small MOSFET.
This enables it to deliver the musical flow and micro detail that makes valves so special.
The 993 takes the unusual step of specifying a choke input power supply for the output stage.
The choke is nearly as large as the power transformer and plays a crucial role in the amplifier’s performance.
The electrically noisy, high current spikes that are pulled from the mains in conventional supplies are avoided.
The choke allows a much more linear current draw instead, keeping dynamic noise under drive much lower.
Premium reservoir capacitors and soft recovery diodes complete the power supply.
The first watt delivered by an amplifier is the most crucial.
It is where the majority of tonal and spatial cues reside at normal listening levels.
The 993’s output stage uses a small and agile output FET to serve this region, giving superior performance where it has most impact.
When current demand rises, higher power bipolar devices supply additional current to move the loudspeaker with up to 125 watts into 8 Ohms.
The amplifier has zero global negative feedback, but because of high bias it still exhibits a low output impedance.
TAS link connectivity provides functions such as remote switch on, remote status monitoring through the system controller, and security bonding The 993 is unconventional only because every element of its design and construction has been driven by a passion to deliver performance
Specifications Trilogy 993
| Size | 465*346*106 (W*D*H) |
|
Size including connectors |
465*378*106 (W*D*H) |
|
Packaged Size |
590*510*250 (W*D*H) |
|
Weight |
19 Kg |
|
Packaged Weight |
22 Kg |
|
Standby Power Consumption |
< 1 Watt |
|
Idle Power consumption |
50 Watts |
|
Maximum Power consumption |
700 Watts |
|
Inputs |
1 pair RCA phono sockets |
|
Input impedance |
400K Ohms |
|
Input sensitivity |
2.0V RMS for Rated output |
|
Rated Power (8 Ohms) |
125 Watts per channel |
|
Rated Power (4 Ohms) |
200 Watts per channel |
|
Recommended load impedance |
4-16 Ohms |
|
Frequency response |
5Hz-30KHz +/- 0.5dB |
|
Distortion |
Less than 1% A weighted at rated output |
|
Phase |
Phase correct (non inverting) |
From a passion to remain true to the essence of music, and by keeping all the key design elements in harmony, they create products of true quality.
Look at the objects around you in your home or work place; the chances are much of what you see is the end result of derivative thinking.
By bringing a small improvement to what already exists; a commercial niche is filled and a small advantage over your competitors is gained.
They at Trilogy Audio Systems do things differently.
