In 2021, Aries Cerat released the Ianus "Ageto" inverted triode preamp. 

This saw the emergence of Gen 3 TriodeFET technology.

The new Gen 3 technology not only sports a new Inverted triode tube, but also redesign of the circuits used and driving configuration.

Primarily developed as a perfect complement to the Ianus Triodefet amplifier series:

Ianus Aperio Integrated Amplifier, Ianus Essentia Mono Amplifier, the powerful Ianus Geminae Mono Amplifiers and the just released QuintEssence Mono Amplifiers.

Dual Chassis design

The main chassis , carrying all audio (non power) signal transformers benefits from completely separating the power supplies to different chassis. By isolating the power transformers, the very elaborate choke filter network and very high energy banks from the delicate signal transformers, achieves a noise floor unattainable by any tube pre-amplifier, and is a class on it’s own in terms of noise level, setting it self apart from other designs using signal transformers.

Signal transformers, such as output, TVC,and  inter-stage transformers, are sensitive receivers to any EMI and magnetic noise. The >120db noise floor of the Ageto is unmatched, even by tube equipment that do not use any transformers in the signal chain.

SPECIFICATIONS

Technology: Gen 3 and Gen 1 Inverted Triode technology (can use new Gen 3 technology or previous Gen 1 technology)

Number Gain Stages: Two

Tubes used: 1 x E280F(driver), 1 X Gen 3 IT (or Gen 1), per channel

Volume: Transformer volume control 26 steps

Channel Balance: Balanced left/right function

HT: HT bypass ready

AC Link: Aries Cerat HT Link ready

Input impedance: 7kΩ <100Hz

Output impedance: 12ohm

Signal bandwidth: 5Hz ~ 300Khz

Maximum voltage output: 2Vrms (low gain), 4V rms(medium gain)

Maximum gain: 3db (low gain version), 9db (medium gain version)

Noise floor: <-120db unweighted

Inputs: 4 x RCA, 1 x true balanced XLR

Dimensions: 550mm W x 430mm D x 165cm H

Weight: 70kg (per chassis) 140kg total