The Wiim Ultra should work well for your 32-ohm headphones, especially since it includes a built-in headphone amplifier. Since you've had a positive experience with the Wiim Pro, you might find the Ultra even better, as it offers more advanced features. The built-in headphone amp should provide adequate power for your headphones, and 32 ohms is relatively easy for most headphone amps to drive efficiently. If you're looking for a compact, versatile solution, the Wiim Ultra is likely a good fit for your needs. Just make sure the volume levels are adjusted to your comfort, especially given your hearing situation.