1) Atma-sphere MA-1 – Presently Owned; They replaced my CAT amps.
2) Any CAT (Convergent Technology Amps) (Owned JL1’s and JL3’s) At 100 watts and 150 watts respectively, CAT amps are very, very under rated.
3) Parasound Halo JC1 (Auditioned)
4) Mark Levinson (336 Owned) The CAT JL1’s replaced this amp. The JL1’s improved upon every sonic signature, especially control/drive on my then M1 Soundlabs.