The catch
Yamaha YDP-146
Duo alters the sound processing and pedal behavior, so set the routing for the lesson.
Side by side
Yamaha YDP-146 vs Yamaha YDP-166: 166 changes key action, while Bluetooth and two-track lessons are already covered by both
Quick verdict
Go for the YDP-166 if a hands-on trial convinces you its GrandTouch-E action is worth the extra cost. If shared lessons, Bluetooth and two-track recording are your main requirements, the YDP-146 is enough, because both models provide them.
Before you buy
Why, and what it costs you
The lower model already handles shared lessons
Two headphone sockets and Duo routing that can be set to Separated or Balanced come with both. A parent and learner do not need the YDP-166 just to share a headphone lesson. Choose the routing on purpose, because Duo also changes pedal roles and disables VRM Lite.
Where this comes from
Headphone sockets: YDP-146 2, YDP-166 2. Combined duet and headphone routing: YDP-146 Yes, YDP-166 Yes. Two-player mode: YDP-146 Yes, YDP-166 Yes. This is a conditional workflow inference drawn from these documented inputs. There is no matched performance measurement.
The catch
Yamaha YDP-166
Duo alters the sound processing and pedal behavior, so set the routing for the lesson.
Yamaha YDP-146
- Why pick it
- After trying both actions, you prefer GHS and want the shared-lesson features
- The catch
- Duo alters the sound processing and pedal behavior, so set the routing for the lesson.
Yamaha YDP-166
- Why pick it
- After trying both actions, you prefer GrandTouch-E and can handle the heavier assembled piano
- The catch
- Duo alters the sound processing and pedal behavior, so set the routing for the lesson.
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What this page compares
Yamaha YDP-146 vs Yamaha YDP-166, compared on keyboard mechanism, listed instrument weight and listed width, along with the practice routines that decide the better choice.
Recording, wireless connections and Duo controls are shared by these neighboring 2026 Yamaha ARIUS models. The YDP-166 changes the keyboard mechanism and cabinet height, and the listed width and depth stay the same.
Which one fits
Pick the situations that sound like you
A headphone lesson is shared by two people
Two headphone sockets and Duo routing that can be set to Separated or Balanced come with both. A parent and learner do not need the YDP-166 just to share a headphone lesson. Choose the routing on purpose, because Duo also changes pedal roles and disables VRM Lite.
- Yamaha YDP-146
- Good
- Yamaha YDP-166
- Good
GrandTouch-E in the same floor rectangle is what you want
Each cabinet measures 1357 by 422 mm. Moving to the YDP-166 takes the weight from 38 to 42 kg and swaps GHS for GrandTouch-E. If you have already measured your room, you can compare the actions without needing more listed floor depth, though you should still plan for the heavier assembly.
- Yamaha YDP-146
- Good
- Yamaha YDP-166
- Better fit
The piano panel is what you prefer to use during lessons
According to both manuals, the piano's control panel is disabled while Smart Pianist is connected. When one person runs a phone and another reaches for the piano's buttons during a lesson, agree on which interface is in charge. The higher model does not remove this constraint that both share.
- Yamaha YDP-146
- Good
- Yamaha YDP-166
- Good
Two-track recording and USB audio are requirements for you
Those routes come with both. Let the action trial and the complete package price settle the upgrade.
- Yamaha YDP-146
- Good
- Yamaha YDP-166
- Good
In practice
Differences you will notice
The lower model already handles shared lessons
Two headphone sockets and Duo routing that can be set to Separated or Balanced come with both. A parent and learner do not need the YDP-166 just to share a headphone lesson. Choose the routing on purpose, because Duo also changes pedal roles and disables VRM Lite.
How we worked this out
Headphone sockets: YDP-146 2, YDP-166 2. Combined duet and headphone routing: YDP-146 Yes, YDP-166 Yes. Two-player mode: YDP-146 Yes, YDP-166 Yes. This is a conditional workflow inference drawn from these documented inputs. There is no matched performance measurement.
The action upgrade keeps the floor space but raises the load
Each cabinet measures 1357 by 422 mm. Moving to the YDP-166 takes the weight from 38 to 42 kg and swaps GHS for GrandTouch-E. If you have already measured your room, you can compare the actions without needing more listed floor depth, though you should still plan for the heavier assembly.
How we worked this out
Listed width: YDP-146 1357 mm, YDP-166 1357 mm. Depth before music rest: YDP-146 422 mm, YDP-166 422 mm. Listed instrument weight: YDP-146 38 kg, YDP-166 42 kg. Keyboard mechanism: YDP-146 GHS, YDP-166 GrandTouch-E. This is a conditional workflow inference drawn from these documented inputs. There is no matched performance measurement.
The app can get in the way when a teacher reaches for the panel
According to both manuals, the piano's control panel is disabled while Smart Pianist is connected. When one person runs a phone and another reaches for the piano's buttons during a lesson, agree on which interface is in charge. The higher model does not remove this constraint that both share.
How we worked this out
The manual says the same thing for both exact models: the control panel is disabled while Smart Pianist is connected. That can change who controls a shared lesson.
Option A
Yamaha, YDP-146
YDP-146
The new YDP-146 suits a shared lesson corner, with two headphone sockets, configurable Duo routing and a two-track recorder. A cabinet and three pedals are part of the package.
- Best for
- After trying both actions, you prefer GHS and want the shared-lesson features
Facts we checked
- Keyboard action: GHS
- Instrument weight as listed: 38 kg
- Width as listed: 1357 mm
- Depth ahead of the music rest: 422 mm
Option B
Yamaha, YDP-166
YDP-166
Everything the YDP-146 offers for shared lessons carries over to the YDP-166, which adds GrandTouch-E keys with escapement and textured tops. Its cabinet has the same listed width and depth.
- Best for
- After trying both actions, you prefer GrandTouch-E and can handle the heavier assembled piano
Facts we checked
- Keyboard action: GrandTouch-E
- Instrument weight as listed: 42 kg
- Width as listed: 1357 mm
- Depth ahead of the music rest: 422 mm
Spec by spec
Where they really differ
| Spec | Yamaha YDP-146 | Yamaha YDP-166 | In practice |
|---|---|---|---|
| Keyboard mechanism | GHS | GrandTouch-E | Try out the documented mechanism before taking its name as a guarantee about feel or mechanical noise. |
| Listed instrument weight | 38 kg | 42 kg | Work out the load you will be moving from the stated measurement basis, and then add the stand, case and accessories. |
| Listed width | 1357 mm | 1357 mm | If the gap on your wall is narrow, check the width as well as the space the bench and player take up. |
| Depth before music rest | 422 mm | 422 mm | The music rest, cable route and comfortable playing clearance are all left out of bare depth. |
| Internal recorder tracks | 2 | 2 | A large number by itself counts for less than track allocation and independent overdubbing. |
Trade-offs
What each pick costs you
With Yamaha YDP-146
- While Smart Pianist is connected, the piano's control panel stops working until you disconnect.
With Yamaha YDP-166
- While Smart Pianist is connected, the piano's control panel stops working until you disconnect.
Change of plan
When the answer changes
GHS feels fine after an action trial, and the complete YDP-146 offer costs less
Go with Yamaha YDP-146. Documented Duo routing, Bluetooth connections and two-track recording come with both. The GHS action has to suit your hands. Before price becomes the deciding factor, compare the exact complete offers.
After trying both actions, you prefer GrandTouch-E and can handle the heavier assembled piano
Go with Yamaha YDP-166. Moving from GHS to GrandTouch-E, YDP-166 raises assembled weight from 38 to 42 kg and keeps the same listed width and depth. Choose it for a hands-on preference for that action. The lesson features are the same on both.
You need a verified winner on mechanical key noise or on personal playing comfort
Neither model fits. Manufacturer records contain no matched test for those outcomes. Try the instruments under the conditions you intend to play in.
Decision guide
How to decide
The lower model already handles shared lessons
Two headphone sockets and Duo routing that can be set to Separated or Balanced come with both. A parent and learner do not need the YDP-166 just to share a headphone lesson. Choose the routing on purpose, because Duo also changes pedal roles and disables VRM Lite.
The action upgrade keeps the floor space but raises the load
Each cabinet measures 1357 by 422 mm. Moving to the YDP-166 takes the weight from 38 to 42 kg and swaps GHS for GrandTouch-E. If you have already measured your room, you can compare the actions without needing more listed floor depth, though you should still plan for the heavier assembly.
The app can get in the way when a teacher reaches for the panel
According to both manuals, the piano's control panel is disabled while Smart Pianist is connected. When one person runs a phone and another reaches for the piano's buttons during a lesson, agree on which interface is in charge. The higher model does not remove this constraint that both share.
What this page can’t tell you
- This comparison rests on documented specifications and conditional reasoning about your setup. We have not put key feel, mechanical noise or speaker performance side by side and measured them.
- The dimensions given are for the specified body or cabinet. Allow space as well for the rest, cables, bench and player.
- Before you order, verify the exact Amazon model, color, supplied accessories, condition and delivery date.
By the numbers
What the data shows
What we found across the digital pianos we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Yamaha YDP-146 |
|
| |
| Yamaha YDP-166 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Yamaha YDP-146
After trying both actions, you prefer GHS and want the shared-lesson features
See price & reviews on AmazonYamaha YDP-166
After trying both actions, you prefer GrandTouch-E and can handle the heavier assembled piano
See price & reviews on AmazonEach link opens in a new tab.
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