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Trilogy Audio Systems 993 Power Amplifier

Reference:
3093
Condition:
New
€12,000.00 (tax incl.)
Shipped within about 7-12 days
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Description

The best design choices can only be achieved by fully understanding all available options. Trilogy is uniquely positioned to do this, combining the best of both solid-state and valve technology to create a remarkable design capable of sublime musical subtlety and impressive power.

All of the 993’s voltage gain is provided by a 6H6П super tube. This Russian military triode has been selected for its exceptional performance at audio frequencies, featuring both high transconductance and low mu. The valve operates in Class A in a grounded grid configuration with zero negative feedback for maximum fidelity.

The driver stage power supplies are fully discrete and shunt-regulated to ensure excellent transient response. Due to the unique topology of the output stage, the valve sees a very light load, driving only a small MOSFET. This allows it to deliver the musical flow and micro-detail that make valves so special. The 993 also takes the unusual step of using 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. It avoids the electrically noisy, high-current spikes typically drawn from the mains in conventional supplies. Instead, the choke enables a much more linear current draw, keeping dynamic noise under load significantly lower. Premium reservoir capacitors and soft-recovery diodes complete the power supply design.

The first watt delivered by an amplifier is the most important, as it contains the majority of tonal and spatial cues at normal listening levels. The 993’s output stage uses a small and agile output FET to handle this region, delivering superior performance where it matters most. When current demand increases, higher-power bipolar devices supply additional current to drive the loudspeaker, delivering up to 125 watts into 8 ohms.

The amplifier features zero global negative feedback, but thanks to its high bias it still maintains a low output impedance. TAS Link connectivity provides functions such as remote power-on, remote status monitoring via 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 that captivates and delights the listener.

Specifications

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: 400 kΩ
Input sensitivity: 2.0 V 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: 5 Hz–30 kHz ±0.5 dB
Distortion: Less than 1% A-weighted at rated output
Phase: Phase correct (non-inverting)

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Introducing Trilogy Audio Systems

'The essence of music

- engineered'

From a passion to remain true to the essence of music, and by keeping all the key design elements in harmony, we 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. Here at Trilogy Audio Systems we do things differently. 

"Making some of the best-looking, best-finished and - appropriately - best-sounding kit in the UK today, but rarely shouting about it, is Trilogy." 

KEN KESSLER - HIFI NEWS

Nic Poulson is the principal designer of all Trilogy Audio Systems products.

Nic's background was originally in broadcast engineering, training with the BBC in the eighties. The corporation's legendary high standards made a deep impression on him. He learned that the way to achieve true quality is to strive for excellence in every area and accept nothing less. He went on to found Trilogy in 1990 and quickly earned a reputation for producing designs that reflected his core values of performance, reliability, pride of ownership and value for money.

Nic's designs can also be found in runway lighting systems, guiding aircraft safely to land at major airports across the UK. His success in the exacting industry of aviation is further confirmation of his breadth and versatility as a designer.

After studying in depth the inherent weaknesses in most mains derived power supplies, and their surprising impact on sound quality, Nic founded Isotek and revolutionised the concept of mains conditioning. Now the creative force behind Isol-8 Teknologies, he has delivered award winning designs which display none of the negative qualities shown by previous generations of mains conditioners. His products have taken the audio community by storm and are sold to discerning users worldwide.

His design philosophy is the key to understanding all Trilogy products.

Instead of deciding a price point and assembling a product steering committee chaired by a marketing manager, Nic goes back to first principles: identifying the fundamental questions at the core of each design issue. By carefully addressing and optimising each electrical design element to deliver the optimum solution, his goal of minimum compromise is achieved.

We complement this by taking great care over the realisation of the design. Beauty, reliability and user friendliness are essential qualities that must be present as a design makes its way through the myriad processes that make a physical real world product.

These are the reasons why our designs are enduring. From a passion to remain true to the essence of music, and by keeping all the key design elements in harmony, we create products of true quality.

Several years in the making, the latest generation of Trilogy Audio Systems components remain true to our original core values. Engineered from the inside out with real heart and soul behind them, they will provide lasting satisfaction, making music for your pleasure. We hope you will share the experience with us soon.

Nic Poulson, progettista Trilogy Audio Systems

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