Quick answer: The Yamaha P-45 and P-145 play identically — both use Yamaha’s GHS (Graded Hammer Standard) 88-key action, so the “upgrade” isn’t in the feel. What the P-145 actually adds: a second pedal jack that unlocks an optional 3-pedal unit (the P-45 has only one footswitch input), USB-C connectivity with Smart Pianist app support that Yamaha does not extend to the P-45, and modestly louder 14W speakers versus the P-45’s 12W. The P-145 has also replaced the P-45 as Yamaha’s current entry-level model, so new P-45 units on sale now are closeout stock, not an ongoing production line.
It’s tempting to assume a newer model number always means a better instrument, and it’s just as tempting to swing the other way and assume “same action” means “don’t bother upgrading.” Neither assumption holds up here. The keybed feels the same under your fingers either way — but two of the differences, pedaling and app support, are things a P-45 owner can never add after the fact.
Side by side
| Yamaha P-45 | Yamaha P-145 | |
|---|---|---|
| Key action | GHS, 88 keys, graded hammer | GHS, 88 keys, graded hammer (identical) |
| Polyphony | 64 voices | 64 voices |
| Speaker power | 12W (2x6W) | 14W (2x7W) |
| Pedal input | 1 jack, footswitch only | 2 jacks — supports optional 3-pedal unit |
| Connectivity | USB to Host (no app support) | USB-C, Smart Pianist app compatible |
| Current production | Discontinued, closeout stock only | Yes — Yamaha's current entry model |
| Street price | ~$400-450 (while stock lasts) | ~$450-520 |
Yamaha P-45 — Only If It’s Discounted Closeout Stock
Yamaha P-45
- The identical GHS graded-hammer action Yamaha has sold for nearly a decade as its best-selling beginner piano.
- Single footswitch pedal jack only — no path to add a true 3-pedal unit later.
- Not on Yamaha's Smart Pianist compatibility list, so the app's chord charts and mixing tools aren't an option.
A free bench and a padded case ship free when the piano itself ships Prime — try Amazon Prime free for 30 days before you order a 25-pound box like this one. The P-45 isn’t a bad instrument; it earned its reputation as a mega-seller for a reason, and the key action under your fingers is exactly the same as its replacement. The catch is availability and the ceiling it has as an instrument: once it’s gone from retailers, it’s gone, and it can never gain the second pedal jack or app support that are built into the P-145’s hardware.
Yamaha P-145 — Best If You Want Pedaling Options or App Support
Yamaha P-145
- Identical GHS key action to the P-45 — the upgrade is not in the feel.
- Second pedal jack supports Yamaha's optional 3-pedal unit, enabling true sustain, sostenuto, and soft pedaling.
- USB-C and Smart Pianist app compatibility for chord-chart display, mixing, and guided lessons.
The P-145 earns the price gap with inputs, not feel. The second pedal jack is the detail most comparisons skip past, but it’s the one that matters most if you ever want a real soft pedal instead of a single on/off sustain switch. Smart Pianist support is the other piece the P-45 simply cannot match: it’s a software feature gated to specific hardware, not something a firmware update can retrofit onto an older board.
The trap: “same action” doesn’t mean “no reason to upgrade”
Plenty of comparisons stop at “the key action is identical, so save your money and buy the cheaper one.” That’s true for feel, but it skips two features that are physically built into the circuit board, not the keybed: the P-45’s single pedal jack has no path to the optional 3-pedal unit at all, and Yamaha’s own Smart Pianist compatibility list excludes the P-45 outright. If you already know you’ll never want a soft pedal or the app, the identical-action logic holds and the P-45 is the better deal while it’s still in stock. If either of those matters down the road, you can’t add them to a P-45 later — you’d be buying a P-145 anyway, just after already owning the P-45.
Who should buy which
Buy the P-45 only if you find clearance pricing meaningfully below the P-145 and you’re certain you’ll never want a second pedal or the Smart Pianist app — it’s the same key feel we point beginners toward throughout our best digital piano for beginners picks. Buy the P-145 if you want Yamaha’s current, fully-supported entry model, especially if a real soft pedal or app-based lessons are even a maybe for you later. For a wider look at where both fit in Yamaha’s full lineup, see our best Yamaha digital piano breakdown.
The bottom line
The Yamaha P-45 and P-145 feel exactly the same under your fingers because they share the exact same GHS action — the price gap is entirely about pedal inputs, app support, and modestly louder speakers, not touch. Buy the P-45 only for a genuine clearance discount with no plans to add a soft pedal or the app; buy the P-145 for Yamaha’s current, fully-supported model and a hardware path you can’t add later.