No. Rane never released a 64-bit driver. However, the 32-bit v2.30 driver works on 64-bit Windows via WoW64 (Windows-on-Windows 64) emulation.
Rane Corporation (now owned by inMusic) discontinued the SL1 over a decade ago. The final official drivers were released for Windows 7 and macOS Snow Leopard (10.6.8). Modern versions of Windows (10/11) and macOS no longer natively support the SL1’s outdated USB audio class. rane sl1 asio drivers download
Extremely unlikely. The SL1 uses a proprietary TI TUSB3200 microcontroller. No engineer is actively developing for that chip. rane sl1 asio drivers download