For short term, IMO it's not reasonable to invest into Jensen Transformer. spending extra $200-ish, it's wiser to sell SP9 and get fully balanced preamp. There are active balanced converters sold by major pro-audio internet retailers along with B&H photovideo and J&R stores of Manhattan for much lower price point, but even that can wait till you get REAL stuff...
BAT VK3i normally with no phono, but VK installs phono-board there for $500 and it will be HUGE step above SP9.
BAT VK3i normally with no phono, but VK installs phono-board there for $500 and it will be HUGE step above SP9.