Main trade-off
Yamaha P-45
USB connects MIDI software, not a direct recording of the internal piano sound.
Head-to-head
Choose the P-145BT for phone backing tracks, direct USB audio and a shallower body. Keep the P-45 on your shortlist when it costs meaningfully less and your routine is solo playing with wired headphones.
Before you choose
A phone can send a backing track to the P-145BT over Bluetooth while the piano remains ready to play. The P-45 has no Bluetooth audio receiver. If the phone is your practice source, that difference avoids a separate speaker arrangement. It matters less when you practice from paper without accompaniment.
What this is based on
P-45: Included Bluetooth audio reception No. P-145BT: Included Bluetooth audio reception Yes. P-45: Headphone sockets 1. P-145BT: Headphone sockets 1. Conditional workflow inference from these documented inputs. No matched performance measurement.
Main trade-off
USB connects MIDI software, not a direct recording of the internal piano sound.
Main trade-off
There is one headphone connection and no onboard recorder.


Yamaha P-45 vs Yamaha P-145BT: compare keyboard mechanism, depth before music rest, live usb audio interface and the practice routines that change the better choice.
These are Yamaha's simple, lightweight 88-key starting points. The useful upgrade question is whether phone-backed practice and recording justify moving beyond the P-45.
Winner by situation
A phone can send a backing track to the P-145BT over Bluetooth while the piano remains ready to play. The P-45 has no Bluetooth audio receiver. If the phone is your practice source, that difference avoids a separate speaker arrangement. It matters less when you practice from paper without accompaniment.
The P-145BT provides USB audio alongside MIDI. The P-45's USB MIDI sends note instructions, so capturing its internal sound needs an analog audio route. A buyer who wants a quick recording of the actual piano should count the recording chain before comparing keyboard prices.
Both bodies are 1326 mm wide. The P-145BT reduces depth from 295 to 268 mm, a 27 mm saving. That helps a shallow practice surface but does nothing for a narrow wall. Leave room for the music rest, cables and a stable playing position before deciding it fits.
The P-45 still supplies hammer action, headphones and Duo. Compare the current complete setup price.
What matters in practice
A phone can send a backing track to the P-145BT over Bluetooth while the piano remains ready to play. The P-45 has no Bluetooth audio receiver. If the phone is your practice source, that difference avoids a separate speaker arrangement. It matters less when you practice from paper without accompaniment.
P-45: Included Bluetooth audio reception No. P-145BT: Included Bluetooth audio reception Yes. P-45: Headphone sockets 1. P-145BT: Headphone sockets 1. Conditional workflow inference from these documented inputs. No matched performance measurement.
The P-145BT provides USB audio alongside MIDI. The P-45's USB MIDI sends note instructions, so capturing its internal sound needs an analog audio route. A buyer who wants a quick recording of the actual piano should count the recording chain before comparing keyboard prices.
P-45: Live USB audio interface No. P-145BT: Live USB audio interface Yes. P-45: USB MIDI Yes. P-145BT: USB MIDI Yes. Conditional workflow inference from these documented inputs. No matched performance measurement.
Both bodies are 1326 mm wide. The P-145BT reduces depth from 295 to 268 mm, a 27 mm saving. That helps a shallow practice surface but does nothing for a narrow wall. Leave room for the music rest, cables and a stable playing position before deciding it fits.
P-45: Listed width 1326 mm. P-145BT: Listed width 1326 mm. P-45: Depth before music rest 295 mm. P-145BT: Depth before music rest 268 mm. Conditional workflow inference from these documented inputs. No matched performance measurement.

Yamaha, P-45
Ten voices and a graded hammer action keep the P-45 focused on playing. It suits a simple headphone routine when you do not need Bluetooth backing tracks or direct USB audio.

Yamaha, P-145BT
The P-145BT combines an 88-key hammer action with Bluetooth backing tracks and USB audio recording. Add a compatible stand and check the pedal before making it a permanent practice station.
Meaningful differences
| What changes | Yamaha P-45 | Yamaha P-145BT | Why it matters |
|---|---|---|---|
| Keyboard mechanism | GHS | GHC | Try the documented mechanism before treating its name as a guarantee about feel or mechanical noise. |
| Depth before music rest | 295 mm | 268 mm | Bare depth excludes the music rest, cable route and comfortable playing clearance. |
| Live USB audio interface | No | Yes | This determines whether compatible software can receive the internal piano sound directly over USB. |
| Included Bluetooth audio reception | No | Yes | Audio reception carries backing music from a supported device, not sound to wireless headphones. |
| Optional three-pedal route | No | Yes | This decides whether a compatible three-pedal station can be added later. |
What you give up
Recommendation switch
Choose Yamaha P-45. The P-45 still supplies hammer action, headphones and Duo. Compare the current complete setup price.
Choose Yamaha P-145BT. A phone can send a backing track to the P-145BT over Bluetooth while the piano remains ready to play. The P-45 has no Bluetooth audio receiver. If the phone is your practice source, that difference avoids a separate speaker arrangement. It matters less when you practice from paper without accompaniment.
Choose neither. The manufacturer records do not provide a matched test for those outcomes. Try the instruments in your intended conditions.
What matters in practice
What the facts say
Useful conclusions from the current digital pianos comparison, followed by the checked facts used to reach them.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Yamaha P-45 |
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| Yamaha P-145BT |
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Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

You prefer a straightforward solo-practice setup with GHS keys
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You use phone backing tracks during short practice sessions
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