I am very enjoying my Pass Labs Aleph 2 (pure class A 100Wx2) + ARC Reference II MKI + Genesis G-V (active woofer). In my opinion, Aleph + active speakers is a perfect combo. Aleph is very sweet, warm and smooth for the top end and midrange. However, the weakness is the bass control due to its design. An active woofer speakers can make up Aleph's weakness.
To drive a passive speaker, you might try stepping up to the higher Aleph 1.2 (200Wx2). However, if you'd like to have more bass control, Pass Labs X-350 or above are also good choices. With X's, you sacrifice a bit sweetness and warmness, but you earn more bass control. It is depending on your taste.
To drive a passive speaker, you might try stepping up to the higher Aleph 1.2 (200Wx2). However, if you'd like to have more bass control, Pass Labs X-350 or above are also good choices. With X's, you sacrifice a bit sweetness and warmness, but you earn more bass control. It is depending on your taste.