Aries Cerat Diana Forte Amplifier

The Diana Forte achieves this signature sound through a specialized parallel output stage using 813 DHT tubes. By eliminating capacitors in the signal path and utilizing high-quality transformers, it delivers a more direct, lifelike, and palpable midrange than traditional tube designs.

At 110kg (242.5 lbs) and with a footprint of 600mm by 590mm, this amplifier requires a dedicated, heavy-duty equipment stand or a reinforced floor surface. Ensure your rack or platform is rated to handle its significant mass and that you have adequate ventilation space, as Class A operation generates considerable heat.

Yes, the Diana Forte features user-selectable output impedance settings of 2, 1.1, and 0.5 ohms. Additionally, it allows for on-the-fly bias adjustment, giving you the flexibility to fine-tune the amplifier's performance to better suit the electrical characteristics of your speakers.

Like any high-end tube amplifier, the Diana Forte requires periodic tube monitoring and eventual replacement. Because it utilizes a specific tube complement, including the 813 DHTs and E280F drivers, you should be prepared for the maintenance costs and technical requirements associated with sourcing and biasing high-performance vacuum tubes.

While it features standard RCA inputs, the Diana Forte is a highly transparent component that will reveal the characteristics of everything upstream. To fully realize its potential for lifelike reproduction, it is best paired with a high-resolution preamplifier and source that match its level of sonic refinement.

With 60W of SE Class A power and a massive 1,800VA power transformer, the Diana Forte is capable of driving a wide range of speakers. However, due to its specific design, it performs best when matched with speakers that complement its power delivery and impedance settings; careful system matching is essential to achieving optimal results.