Both cover espresso and filter with a single-dose-friendly workflow. DF54 uses 54mm flat burrs and one external stepless dial; Opus uses 40mm conical burrs with 41 outer settings plus a hidden inner micro-adjustment ring.
The £50 checked item-price gap and different adjustment systems are evidenced; better flavour, consistency, retention, static control and noise are not established without comparable independent testing.Both cover espresso and filter with a single-dose-friendly workflow. DF54 uses 54mm flat burrs and one external stepless dial; Opus uses 40mm conical burrs with 41 outer settings plus a hidden inner micro-adjustment ring.
The £50 checked item-price gap and different adjustment systems are evidenced; better flavour, consistency, retention, static control and noise are not established without comparable independent testing.The table keeps missing fields visible and separates current retailer evidence from product quality.
| Database field | DF GrindersDF54 V4DF54 V4 · Earl SKU DF-001Open full record → | FellowOpusOriginal Opus · FL1221MB-UK / FL1221MW-UKOpen full record → |
|---|---|---|
| Product lifecycle | Current model | Current model |
| Current retailer context | £239 · Earl Coffee · verified delivered Check at Earl Coffee ↗ Direct retailer link · no commission enabled · checked 23/07/2026 | £195 · Healf · verified delivered Check at Healf ↗ Direct retailer link · no commission enabled · checked 23/07/2026 |
| Best-supported offer confidence | 100/100 · high confidence · Earl Coffee · exact model · checked 23/07/2026 | 90/100 · high confidence · Bella Barista · exact model · checked 23/07/2026 |
| Model-verified offers | 2 current exact or verified | 2 current exact or verified |
| Price-history maturity | snapshot · 1 checked date | snapshot · 1 checked date |
| Best for | Buyers wanting a compact flat-burr, single-dose workflow for espresso and filter without moving to a £350-plus grinder | Buyers wanting one sub-£200 grinder for espresso and filter coffee, especially when changing beans |
| Main trade-off | DF54 is a white-label platform sold under names including Solo, Turin, MiiCoffee and G-Iota; confirm the V4 hardware, UK plug, seller and warranty rather than assuming every DF54 listing is equivalent. Manufacturer and retailer dimensions differ slightly, and the sub-0.1g retention figure is a seller or manufacturer claim—not a Home Coffee Index measurement. Stepless adjustment favours espresso precision but does not provide repeatable numbered clicks. Independent grind distribution, retention, static, noise, speed and durability testing is pending, so no quality ranking is published. | This is the original Opus, not the newly announced Opus 2 with 48mm burrs and a stepless side dial. UK Opus 2 availability is still inconsistent, so compare the exact name and burr specification before buying. The original’s hidden inner ring improves espresso granularity but makes adjustments less intuitive than a single external dial. Anti-static performance needs chute cleaning, and Fellow’s low-retention and grind-quality language remains unverified by Home Coffee Index testing. The recorded retailer warranty is 12 months, and delivery cost must be confirmed at checkout. |
| Burrs | Custom flat stainless-steel burrs | C6-40 six-blade stainless-steel conical burrs |
| Burr diameter | 54 mm | 40 mm |
| Adjustment | Stepless micrometric | 41 outer settings plus hidden inner micro-adjustment and calibration ring |
| Claimed grind range | Espresso, pour-over, AeroPress and French press | Espresso, AeroPress, pour-over, filter, French press and cold brew |
| Dosing workflow | Single dose into supplied 58mm catch cup · bellows included | Single dose into magnetic catch cup or portafilter insert |
| Bean hopper | 25 g | Not recorded for this product |
| Static control | Plasma generator in exit chute | Not recorded for this product |
| Published retention claim | Below 0.1g · not independently verified | Not recorded for this product |
| UK motor | 150W · 220–240V three-pin | Not recorded for this product |
| Width | 11 cm | 12.9 cm |
| Depth | 19 cm | 21 cm |
| Height | 29.7 cm | 26.8 cm |
| Weight | 4.7 kg | 2.3 kg |
| Recorded UK retailer warranty | 2 years · repair warranty | 12 months |
| Load bin | Not recorded for this product | 110 g |
| Timed auto-stop | Not recorded for this product | 30, 60, 90 or 120 seconds |
| Anti-static system | Not recorded for this product | Chute should be brushed about every 60 grinding cycles |
| Compatible records | 10 evidenced pairings | 3 evidenced pairings |
| Manual or product hub | Linked | Linked |
| Replacement parts | 2 linked | 2 linked |
| Evidence sources | 4 sources | 4 sources |
| Record completeness | 90% · not a quality score | 87% · not a quality score |
Structured comparison shows recorded differences and evidence gaps. It does not claim that the most complete, cheapest or most connected product makes better coffee. Commercial relationships never change comparison order or evidence fields. Read the affiliate policy.