You can get all that you want, but it is going to push your budget a bit:
1) Schiit Saga (original on closeout) $299 (you get the option of passive or tubed with the Saga).
2) Schiit Mani Phono Preamp- $129
3) Schiit Loki EQ/Tone Control-$149
This gets you all American designed and manufactured products with a warranty. You can also go in steps as your budget allows and/or wait for the Mani/Loki to come up on B stock for slightly cheaper. The downside is that the Loki will have to go in between the preamp and amp to work with all sources (which theoretically can degrade sound quality), but it has a full bypass switch so can be switched out of the circuit.
The alternative is going to be to start searching on the used market for something that has all of the foregoing in a single box, but it is going to be very hard to find. Perhaps an older Parasound. An older McIntosh preamp would tick all of your boxes, except the budget, and I expect it would significantly exceed it.
Do leave some money for decent interconnects and speaker cables. By that, I don't mean $500 cables, but something like Blue Jeans, which are made in the US, good quality, and will hold up over time. (Worlds Best Cables on Amazon sells RCA cables made with Canare L-4E6S wire for $21.95 a pair and you could purchase raw Belden or Canare speaker cable from Blue Jeans for 70 cents to $1.50 per foot (I believe all Carnare and Belden cable is US made). I only harp on this, as I had a speaker I thought was failing that I traced down to a bad solder connection in a speaker cable that degraded over time.
1) Schiit Saga (original on closeout) $299 (you get the option of passive or tubed with the Saga).
2) Schiit Mani Phono Preamp- $129
3) Schiit Loki EQ/Tone Control-$149
This gets you all American designed and manufactured products with a warranty. You can also go in steps as your budget allows and/or wait for the Mani/Loki to come up on B stock for slightly cheaper. The downside is that the Loki will have to go in between the preamp and amp to work with all sources (which theoretically can degrade sound quality), but it has a full bypass switch so can be switched out of the circuit.
The alternative is going to be to start searching on the used market for something that has all of the foregoing in a single box, but it is going to be very hard to find. Perhaps an older Parasound. An older McIntosh preamp would tick all of your boxes, except the budget, and I expect it would significantly exceed it.
Do leave some money for decent interconnects and speaker cables. By that, I don't mean $500 cables, but something like Blue Jeans, which are made in the US, good quality, and will hold up over time. (Worlds Best Cables on Amazon sells RCA cables made with Canare L-4E6S wire for $21.95 a pair and you could purchase raw Belden or Canare speaker cable from Blue Jeans for 70 cents to $1.50 per foot (I believe all Carnare and Belden cable is US made). I only harp on this, as I had a speaker I thought was failing that I traced down to a bad solder connection in a speaker cable that degraded over time.