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Check out the Pine Tree integrated amp on US Audio Mart, slightly above your budget at $ 875 but would be an Integrated that will have enough clean power to really drive your speakers and isn’t one you’d have to upgrade too quickly, you could build off of it and upgrade if you really got the itch once you had everything else built out. Has a DAC built in that is reviewed well, all you need is to provide a source. Maybe the seller will give you a first time Audiophile discount. I tried posting the link but the site was blocking me from doing so.
Cables, don’t roll with Amazon, look at Pine Tree Audio, great, hand made cables that won’t break the bank but won’t need to be upgraded. You can also find some EBay sellers that make their own cables, you can get some really well made cables made with quality materials for a really great price but you have to sift through and find the right vendors.
When you chose an amp / integrated, you’ll need to be selective as your speakers are harder to drive, it’s not all about watts but generally an amp that doubles Watts from 8 to 4 ohms and is rated to drive speakers throughout the range, your speakers dip, is key to letting your speakers shine and not burning out whatever amp you roll with.
Good Luck.