Selling gear made to be a set

I have sold or given away items in the past and it has come back to haunt me.  I miss the uniqueness of the sound.  You are going 100% digital, its fast and very precise.  I love that sound.  I also have tubes and lots of analog and love that sound.  Not that one is better, just different.  I am purely a buy and hold, unless I somehow end up with a duplicate.  If I were you, put the items not used in storage.  If you still aren't listening to them after a year or so, then sell them.  Good luck. 

Sell them as a pair.

Take the highest bid either way.

Try to sell the set for a period of time, if no dice, split it!

I think most buyers on Audiogon are willing and able to easily research sales prices for gear. If I were you, I’d price the set to move using current sales data, etc. It’s not uncommon for me to see pricing from individuals higher than dealer pricing on preowned and open box. I’ll buy from the dealer generally if the pricing is close, especially when there is a return option, or warranty that will be extended. I think some sellers struggle to understand the options available to buyers. 
 

Sorry for the long winded answer, I enjoyed some dark beers this afternoon. 

If you list them as a set, you'll probably limit your potential pool of buyers; so, I'd list them separately. However, I'd put a note in each ad that you will offer a discount to anyone who buys both items.