Yes, the Casio PX-160 is a little bit more expensive then the Yamaha P45… 5)Battery Powered or AC adaptor # The Yamaha NP12 runs on either an AC adapter or … Even though it’s an entry level digital piano, the P45 still taxes you a lot for the Yamaha brand. The Yamaha NP12 has a range of preset piano songs as well as voice demo songs, both for you to listen or play along. While Yamaha NP-12 is a great choice, Yamaha NP-32 is an even better choice. This is a perfectly adequate sound engine, but it definitely feels a lot more digital than the CF sound engine you get on the P125. Yamaha P121, the pricier option, tends to get more favorable reviews than Yamaha P-45 [4.8 vs 4.7 ]. In our awesomeness score Yamaha P121 ranks #2 out of 121 and Yamaha P-45 ranks #12 out of 121. The P45 uses Yamaha’s old sound engine, called AWM Sampling. The P125 feels very natural to play; almost like a real piano, and the P45 … lighter than the P45… However, if you’re a frequent traveler, Yamaha NP-32 isn’t a recommended option for you because it is heavier and has a shorter battery life as compared to Yamaha NP-12. This keyboard is also just over 10 lb. Go to awesomeness ranking Go to consumer score ranking Yamaha P-45 … With a greater number of keys, it gives you more room to create great music. The Yamaha P71 is a near-identical keyboard to the P45. Yamaha P45 vs. Casio PX-160. Unlike the P45, the P71 is an Amazon exclusive product and is $50 cheaper, making it Yamaha’s lowest costing weighted-key digital piano. One of its competitors, the Casio PX-160 offers much more value for the price.