Considering that the IRS V is an uber-rare icon, that this particular set has been brought up to 21st century standards by qualified specialists, and that today's continuation model costs $680,000, $70K sounds very reasonable.
My pop(RIP) had a set of the IRS'. There's something about the soundstage presented by a physically large set of transducers that is difficult to resist. Even small ensemble music just seems... there. That said he played holy heck getting them set up *just* right to get them to sound their best.
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