A lightweight digital piano can still be awkward on a staircase. All three instruments here are around 1.3 metres long, and the padded bag adds weight before you pack a pedal or power supply.
The Casio CDP-S160 is the lightest of this shortlist. The Yamaha P-145BT adds 0.6 kg; the Roland FP-10 is heavier but has the shortest body. All have 88 hammer-action keys, speakers and a supplied sustain switch. To make a useful decision, have your stair and landing measurements, a case specification, and a list of equipment available at the destination. This is a comparison of published specifications, not a hands-on action or lifting test.
Allow for the bag before comparing the load
Using the same 6 lb padded bag for each piano puts the known subtotal between 13.2 and 15.3 kg. The coloured part below is the bag alone. The rest of your equipment still has to be added.
The Roland body is 3.8 cm shorter than the Casio, yet using this same bag gives them the same external package length. If a tight landing is the problem, compare the packed dimensions as well as the keyboard dimensions.
Three instruments to try, with the transport budget beside them
The piano-and-bag budgets below use US Sweetwater prices checked 27 September 2026, before tax and shipping. Amazon prices, where shown in the product cards, are separate and may differ. Each budget includes a new piano, its supplied power adapter, sustain switch and music rest, plus the US$169.99 bag. It assumes a manufacturer-specified stand and suitable seat already exist at both locations. If they do not, their purchase cost is additional and is not priced here. No app, subscription or separate speaker is required for ordinary solo practice.
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Casio CDP-S160: the smallest load here
10.5 kg without batteries · 1,322 × 232 × 99 mm, music rest removed
The CDP-S160 has the shallowest and lowest body of these three, with Casio's Scaled Hammer Action Keyboard II. It is the first one to try when reducing carry weight is the priority. Six AA batteries can power it where mains power is unavailable, although they add weight and replacement cost.
The compact size comes with a basic instrument: ten sounds, 64-note maximum polyphony and a supplied switch-style sustain pedal. Half-damper control requires an optional compatible three-pedal unit. That extra pedal assembly belongs in the carry calculation if your repertoire needs it. See Casio’s specifications and the quick-start manual.
Piano + bag: US$719.98. The black piano was US$549.99 at Sweetwater. The budget uses the included mains adapter, not batteries.
Yamaha P-145BT: a modest weight step for a different action
11.1 kg · 1,326 × 268 × 129 mm, music rest removed
The GHC, or Graded Hammer Compact, keyboard is the reason to compare this in person with the Casio. A 0.6 kg difference is small enough that your response to the keys may settle the choice. Yamaha also includes Bluetooth audio for playing phone backing tracks through its speakers.
It needs mains power and is 36 mm deeper than the Casio. The Bluetooth connection is audio, not Bluetooth MIDI; an app connection is a separate compatibility question. Yamaha’s specification lists the dimensions and accessories. Adapter inclusion varies by territory, so confirm it with your seller outside the US.
Piano + bag: US$699.98. The new black piano was US$529.99 at Sweetwater. The included footswitch covers basic sustain; a half-pedal upgrade is optional and outside this total.
Roland FP-10: shorter across, heavier in the bag
12.6 kg, music rest detached · 1,284 × 258 × 140 mm
The FP-10's PHA-4 Standard action includes escapement. Try it with the music you actually play: a clear preference for this keyboard is a sensible reason to accept the extra 2.1 kg over the Casio. The shorter chassis alone will not help a landing if you put it in the same oversized case.
For these calculations, we use the 12.6 kg figure on Roland’s current US specifications. The older reference manual says 12.3 kg and directs readers to the website for current specifications. Ask the seller to confirm the actual unit if that margin matters. Half-pedalling requires the optional DP-10 rather than the supplied switch.
Piano + bag: US$669.98. The piano was US$499.99 at Sweetwater. It needs mains power and is the heaviest combination here.
The common bag: Gator GKB-88 SLIM
This padded, hand-carried bag provides one consistent basis for the comparison. It has adjustable internal restraint straps and reinforced carry handles. There are no wheels to help with the level part of the journey.
Gator lists an interior of approximately 136.5 × 35.6 × 17.1 cm and an exterior of 139.1 × 38.1 × 19.7 cm. All three bare instruments fall inside those published interior dimensions. This is a dimensional check, not a physical fit test: seller listings contain differing dimensions, so confirm the exact bag before ordering and check that restraints and padding clear the controls. Remove the music rest for packing.
The bag was US$169.99 at Sweetwater. A lighter bag may suit a carefully controlled trip; a more protective case can be appropriate for shared vehicle loads. Our keyboard bag and case comparison covers those alternatives.
Finish the weight calculation with your own kit
Leaving a suitable stand and seat at the rehearsal room changes the trip substantially. Before buying a lighter piano, ask what can stay there. A stand also has its own folded shape, locks and carrying problem; our X, Z and table-style stand guide covers the format choices. Follow the piano maker's stand requirements.
Use this worksheet for everything that leaves home. Start with the selected piano-and-bag subtotal as an estimate, then replace it with the weight of your actual packed bag. Add loose items once. We have not measured those accessories, so their cells are yours to fill in.
| Item | What travels? | Weight |
|---|---|---|
| Piano + bag | Your selected pair | _____ kg |
| Power + sustain | Adapter, lead and pedal | _____ kg |
| Music rest + scores | Anything not already in the bag weight | _____ kg |
| Stand + seat | Zero carried if both stay there | _____ kg |
| Extras | Headphones, tablet, cables; speaker if needed | _____ kg |
| Whole trip | Add each item once | _____ kg |
The whole-trip total and the heaviest individual lift are different numbers. Put loose gear in a separate load if that makes the trip manageable. An extra speaker may be needed for an ensemble even though all three pianos have speakers; check the room and audio connection requirements before adding one to the shopping list.
Check the keys in the shop and the turns at home
Hammer-action names cannot tell you how comfortably you will play. On each candidate, try a quiet passage, a repeated note and chords with your fingers farther towards the back of the black keys. Use a similar listening level. Notice whether you can control the quiet notes and whether the keys return as your passage requires. A piano that meets the weight target can still be the wrong instrument for your hands.
Then check the journey with the packed dimensions, including these points:
- The landing turn. Measure the available turning space, protruding rails and low ceilings. A door's width alone does not establish that a long bag can turn through it.
- The hand position. Ask to handle the intended bag with the instrument inside, on a clear level floor with help available. Check handle placement, slipping contents and whether the ends obscure your view. Do not use the music rest, keys or controls as lifting handles.
- The separate loads. Disconnect everything before moving. Yamaha's owner’s manual specifically requires removing connected cables. Pack the power supply and pedal where they cannot press into the keys or sockets.
- The difficult section. No weight in this post is a one-person safety rating. Arrange help or a different route if the load prevents secure footing, visibility or use of the handrail. Ordinary case wheels do not make a staircase into a rolling route.
Take the case measurements and your equipment list to the shop. Ask about trying the actual piano-and-bag combination and the return terms before committing, particularly when the landing turn is close.
