Dustin, check out a Doge 8 clarity ,or a Modwright SWL 9.0 sig , or a Dehavilland Ultraverve 3. Whether you can spring for a new one ($1400) or find these in used form the Doge and Modwright would be right in your budget of $1000. Any of these would inject some real warmth and musicality to your system.
http://www.dehavillandhifi.com/UltraVerve-Preamplifier.htm
Matt M
http://www.dehavillandhifi.com/UltraVerve-Preamplifier.htm
Matt M