Feliks Audio Euforia
Feliks Audio are famed tube amplifier manufacturers from Poland and their heritage makes an appearance in their flagship headphone amplifier, Euforia. Based on the historic 6SN7 tube family, Euforia's transparency matches some of the best solid-state amplifiers on the current market.
Stereophile's Herb Reichert writes that Euforia "allows recordings to feel more direct and unmolested" – high praise from one of the world's most experienced listeners. The same writer found its pairing with the HEDDphone by Heinz Electrodynamic Designs (HEDD) particularly enriching.