Allnic 1201 replacement tubes?


Hello all ...I have an Allnic 1201 phonostage and I think the Mullard E180CC’s are nearing the end . Should I pick up the same NOS Mullards are there alternatives where I won’t lose performance? 
Also they seem difficult to pull . Like they are loose at bottom and will just rip apart but I might be overthinking it..? Thanks 

VPI super prime scout 
tekton encore
manley snappers / jumbo shrimp
128x128tommypenngotti
I would be very careful without the tube puller tool.   It’s a bit challenging even with the tool.
@pops I found the tool , it is very difficult to pull tubes , you’re right ! What a hassle . On top of that , now my left side is acting up , low volume and not as full , like a cold solder joint , 😫 even changed tubes , same result . 
@francozi 
I’d come contact Albert Porter , he’s your man . Hooked me up with new Allnic 1202 , great guy . Good luck !