Our take
The source title calls this a Sharp ZR559YK, but Sharp's own manual names the R-559Y family and says K identifies the black finish while W identifies white. The manual's 1.8-cu.-ft. capacity, 1,100-W microwave output and sensor-cooking controls match the row's other identifying clues. Sharp's manual verifies the black R-559YK identity. I retain the extra Z as a frozen-label discrepancy, not a confirmed Sharp alias. Amazon B0723BR8JV failed to load, and an importer listing points to a different ASIN, so use the tagged R-559YK search and verify the model plate. The review reports documented specifications and does not claim personal cooking tests.
A black countertop candidate for buyers who need the documented 1.8-cu.-ft. cavity and sensor functions and can leave the stated ventilation clearance..
Choose another model if an exact B0723BR8JV match, a known turntable diameter, a model-specific trim kit, or an explicit commercial-duty rating is essential. Check the actual nameplate and installation instructions before purchase.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Sharp documents a 1.8-cu.-ft. cavity and identifies the K suffix as the black version of R-559Y.
- The specification table separates 1,100 W of microwave output from 1,600 W of electrical input.
- Sharp names Sensor Cook and explains humidity-based adjustment rather than leaving sensor capability to inference from an automatic menu label.
- The manual gives a grounded 120-V supply requirement, approximately 14-A current and concrete outside dimensions and ventilation space.
What to weigh up
- The frozen source label starts with Z, a character absent from Sharp's documented model designation; treat that mismatch explicitly when checking a listing.
- The historical Amazon page did not open, and the importer page's different ASIN does not prove B0723BR8JV identifies R-559YK.
- The manual shows a glass cooking tray but gives no tray diameter and does not document a compatible trim kit.
- The reviewed manual does not assign a commercial-foodservice duty classification.
The key details
| Model covered | R-559YK |
|---|---|
| Capacity | 1.8 cu. ft. cavity; black K suffix in Sharp's R-559Y family |
| Microwave output | 1,100 W microwave output, separate from 1,600 W input |
| Cooking approach | Sensor Cook and humidity-based cooking-time adjustment; ten power selections |
| Installation options | 120 V AC / 60 Hz grounded supply, approximately 14 A; 23.2 W × 13.3 H × 19.0 D in.; countertop placement requires 4 in. ventilation space; trim-kit fit and commercial-duty class are not documented |
| Finish and turntable | Sharp defines K as black; a glass cooking tray is documented but its diameter is unknown |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
What the features mean for you
Use Sharp's model code and finish suffix
The source row says ZR559YK, while Sharp's manual identifies R-559Y and says the following K means black and W means white. The rest of the frozen title aligns with the manual's 1.8-cu.-ft. cavity, 1,100-W output and sensor-cooking feature. The importer listing repeats ZR559YK and lists R559YK as its manufacturer part number, but it also names a different Amazon ASIN and contains contradictory structured specifications. I therefore use the manufacturer's R-559YK code for the verified model and keep ZR559YK as a discrepancy in the source label, not as an established alias. Confirm the printed rating label on the exact unit before treating an online search result as a match.
Plan for the full cavity and its clearance
Sharp gives a 1.8-cu.-ft. cavity and outside measurements of 23.2 inches wide, 13.3 inches high and 19.0 inches deep. The manual asks for a level, flat surface and four inches between the oven and adjacent surfaces for ventilation. Those measurements make the unit's counter footprint and surrounding air space practical checks before choosing it. Cavity volume alone cannot confirm that a wide dish or tall container will fit, so compare cookware with the actual opening and supplied tray. These are manufacturer specifications, not a report about how the appliance performed in a particular kitchen.
Compare output separately from electrical input
The specification table reports 1,100 W of microwave energy output and 1,600 W of input power. Those numbers describe different parts of the electrical path; using the larger input value as cooking output would overstate the microwave rating. Sharp also lists ten power selections. That gives a buyer a grounded basis for comparing stated cooking output and manual control range, but it does not promise a specific cooking time for any food, quantity or container. If the household has a minimum outlet or circuit requirement, use the manual's separate supply information rather than inferring it from the output number.
Sensor cooking is described as humidity-based
Sharp's control diagram names Sensor Cook, and the sensor section says the microwave detects increasing humidity released by food and adjusts cooking time to the type and amount. That is specific evidence for sensor cooking, distinct from a preset button that merely starts a fixed cycle. The manual applies to both finish suffixes in the R-559Y family, so its common cooking controls support both K and W variants; the source row's black claim matches K. Follow the preparation instructions for the sensor categories and still check the exact unit's key panel for the described controls.
Leave fit and duty questions open where the manual does
The manual shows a glass cooking tray and turntable but does not state the tray diameter. It gives flat-surface installation and ventilation guidance, not a trim-kit conversion, so neither a measured platter size nor cabinet compatibility should be guessed. It also does not explicitly classify the R-559YK for commercial foodservice; a consumer operation manual is not a commercial duty rating. The historical Amazon B0723BR8JV page returned an internal error, while the importer page associates the similar label with another ASIN and contradictory details. The affiliate destination therefore searches for the exact R-559YK model and carries buyershortlists-20. Confirm the suffix and seller documentation, and treat unknown specs as unknown. No personal test results, buyer-review summaries, price, inventory or sales claims are made here.
What else to compare
If exact historical-ASIN identity, a known turntable diameter, trim-kit fit or explicit commercial duty is necessary, choose a model with exact-variant documentation for that requirement. R-559YK remains a documented black 1.8-cu.-ft. countertop microwave with 1,100 W output and sensor cooking, subject to the stated label and fit limits.
Before you buy
What is the manufacturer's model code?
Sharp's manual names R-559Y and uses K for black or W for white. The verified black variant is R-559YK; the source title's extra leading Z is not confirmed by Sharp.
How much capacity and microwave output does it have?
The Sharp manual lists 1.8 cu. ft. and 1,100 W energy output. It separately lists 1,600 W input power.
Does it have sensor cooking?
Yes. The manual names Sensor Cook and explains that a humidity sensor adjusts cooking time to the food type and amount.
What electrical service and clearance does the manual specify?
It lists a grounded 120-V, 60-Hz supply at approximately 14 A and asks for four inches of ventilation space around the oven.
What size is the turntable, and can it be built in?
The manual shows a glass tray and gives outside dimensions, but it does not state tray diameter or identify a compatible trim kit.
Is ASIN B0723BR8JV confirmed for this model?
No. Its Amazon page returned an internal error; the importer listing names a different ASIN. Use the tagged R-559YK search and verify the model label.
Is commercial duty confirmed?
The reviewed Sharp manual does not classify this model for commercial foodservice, so that attribute remains unknown.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Sharp R-559Y Operation Manual, including black K and white W variants ↗ — checked October 5, 2026.
- Sharp R-559Y Operation Manual, checked 2026-10-05. Page 1 lines 21-24 names R-559Y and says K means black while W means white. Printed page 6 lines 297-310 lists 1.8 cu. ft., 1,100 W energy output, separate 1,600 W input, 120 V/60 Hz grounded supply, approximately 14 A, dimensions and ten power levels. Printed page 5 lines 255-280 requires a level flat surface and four inches of ventilation. Page 8 lines 346-348 identifies Sensor Cook; page 17 lines 674-677 describes humidity-based cooking-time adjustment. ↗ — checked October 5, 2026.
- Importer listing checked 2026-10-05. It repeats the ZR559YK title and lists Sharp, model label ZR559YK, manufacturer part R559YK and UPC 074000619029, but names different Amazon ASIN B01MR3HP5S and provides contradictory capacity and wattage fields. Used only as a weak label clue, not to supply attributes or prove the frozen ASIN. ↗ — checked October 5, 2026.
- Historical ASIN page returned an internal server error when reopened 2026-10-05; no exact-ASIN crosswalk. The affiliate link is a tagged exact-model search. ↗Paid link · We may earn a commission. — checked October 5, 2026.
The decision
Sharp's manufacturer manual verifies black variant R-559YK in the R-559Y family, with a 1.8-cu.-ft. cavity, 1,100 W output, ten levels and humidity-based sensor cooking. Keep the source title's Z prefix as an unresolved label discrepancy, and do not map its failed ASIN to this model. The manual gives a flat-surface setup and four-inch ventilation space but not tray diameter, trim-kit fit or commercial classification. Use the tagged exact-model search and verify the printed suffix.
Is it the right fit?
Check the exact model and today’s offers on Amazon.