You will need min 250-300W rms
most recorded music,,during heavy guitar, drums, orchestral crescendos, different frequencies, etc, will need the headroom so you don’t clip the amp.
I know, I know,…..150 is fine, it is, but if you like volume, any,volume at all, you will need 250-300W to ensure the amp don’t clip on you.
I’ve written a lot of messages in here regarding my past 36 years buying,using,listening to music, all kinds, mostly metal, rock, blues, at loud,levels, I have clipped every,amp until I bought the rotel rd1090, lasted me a couple years, BUT,….that was my first high powered amp, 380w 8 ohm, 720+W rms at 4 Ohm, and stable to lower.
mine had a bad inrush current limiter, so one.morning, blue/white flash popped, then some,smoke,….
anyway, I’ve never had less than min 250W amp/s.
I have not,clipped any amp the past 25+ years.
having the headroom will,give you that effortless, flowing, never distorted sound, and airy stadium like sound.
I will never go,below 300W any,more. Just my opinion.
my amps now are 600-650W rms at 8 Ohm, 1000W rms at 4 Ohm, stable to much lower. Speakers only rated to 250 MAX,never had an issue, never fatiguing, always clean,clear and amazing.
acoustic guitar is sublime, (eagles, Donovan,, ) electric guitar is “in the room” (Gary Moore, m Schenker, malmsteen)
metal is also great, never clip, or strain the amps. Always fluid and they buzz along with ease
thanks for reading my,dribble. Merry Christmas 🎄🎁