d6f7415d_200G_and_needed_modifications___What_it_s_good_for_
[Feature] Tubes [ECP] Sony 07ms (+ sd187b) [Ampro] Sony 09MI [What it's good for.] 
The 9 inch sony tubes are expensive as they cannot be rebuiltd and very few machines ever used them, luckily there are compatible MEC tubes that can be used in stead.
The Ampro Esprit 4200G and needed modifications.
What it's good for.