Trilogy 933 Amplifier for Headphones

Our price: £2,795.00

What HFL Thinks

Trilogy 933 Headphone Amplifier – To get the best out of any headphones then they need to be driven properly and with the Trilogy 933’s pure single ended design then they don’t come any better than the 933. Trilogy Audio Systems are a London based company founded by Nic Poulson in 1992. Nic has a wealth of experience that has led him to create no compromise products, the 933 has not been built to a price but has only one goal, to get the best performance from today’s breed of Highend Headphones, so please come along to HiFi Lounge to give it try.

“One of the best, if not the best headphone amplifiers money can buy” – Alan Sircom HiFi+


The task of moving the delicate membrane of a headphone driver is a very different to energising the reactive complex impedance of a multi driver loudspeaker. With much less mass to move and without the masking of listening environment and room interaction, the small signal integrity of an amplifier becomes even more critical than that of a regular power amplifier.

A different approach to design is required. This has led us to a very different solution to most accessory mass market offerings.

The Trilogy 933 is a clean sheet design with the same natural presentation and vibrant musicality found in our award winning pre and power amplifiers. Its a subtle, but crucial distinction: we like to think of the Trilogy 933 as an amplifier for headphones, not a headphone amplifier.

The svelte amplifier enclosure is machined from a solid billet of aluminium. Its hefty 1.3kg mass provides outstanding physical and electrical isolation for each of the active circuit elements as well as a stable thermal base for heatsinking the output device


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