Our Verdict
COWSAR COWSAR 20 Bar Espresso Machine Wins

At a slightly lower price of $317.36 compared to the Amaste's $319.99, the COWSAR offers superior features for espresso enthusiasts, most notably its PID temperature control and a standard 58mm portafilter. The PID ensures consistent brew temperature, vital for quality extraction, while the 58mm portafilter allows for a wider range of aftermarket accessories and better puck preparation. The Amaste with its Thermoblock boiler and 51mm portafilter is the better pick for those prioritizing immediate heat-up and a slightly more compact, basic home setup without plans for extensive customization.
Bottom Line: COWSAR COWSAR 20 Bar Espresso Machine is the better choice. At a slightly lower price of $317.
In-Depth Analysis
How they compare in practice
The Amaste Amaste Espresso Machine and the COWSAR COWSAR 20 Bar Espresso Machine stand as compelling integrated grinder options for the home barista, yet they cater to slightly different priorities. The most significant divergence lies in their internal components affecting espresso quality and user experience. The COWSAR boasts PID temperature control, a feature absent in the Amaste. This PID system actively monitors and maintains a stable water temperature throughout the brewing process, which is critical for extracting the full flavor profile of coffee beans. In contrast, the Amaste's Thermoblock boiler offers quicker heat-up times, making it faster to get started, but it typically provides less temperature stability during the shot.
Another crucial difference is the portafilter size. The COWSAR features a 58mm portafilter, which is the commercial standard, opening up a vast ecosystem of third-party tampers, baskets, and distribution tools. This allows for greater customization and improvement in puck preparation, directly impacting shot consistency and quality. The Amaste, however, uses a 51mm portafilter, which is less common and limits accessory choices, making it harder to upgrade or find specialized tools. For grinder capability, the COWSAR offers 30 grind settings, double that of the Amaste's 15, providing finer control over grind size—a key factor in dialing in the perfect espresso shot.
While the COWSAR's 20-bar pump pressure is higher than the Amaste's 15-bar, it's important to note that ideal espresso extraction typically occurs around 9 bars. Both machines use high-pressure pumps that are regulated down, but the COWSAR's higher rating doesn't inherently mean better espresso and can even be more prone to channeling if not managed properly. The COWSAR's single boiler means a wait time when switching from brewing to steaming, a trade-off for its precise brew temperature, whereas the Amaste's Thermoblock allows quicker transitions. Ultimately, the COWSAR's combination of PID, 58mm portafilter, and extensive grind settings, all for a slightly lower price, offers a more robust and upgradeable platform for the serious coffee enthusiast seeking greater control and consistency in their espresso-making journey.
Key Differences
The most significant spec differences at a glance
Pump Pressure
25% lessPortafilter Size
12% lessAdvantages
Where each product wins
COWSAR
- Pump Pressure: 25% higher (15 vs 20)
- Portafilter Size: 12% higher (51 vs 58)
Which to Pick for Your Situation
Concrete scenarios with a clear recommendation
For the aspiring home barista focused on shot quality and consistency
COWSARThe COWSAR's PID temperature control and 58mm portafilter are crucial for achieving precise extraction and using professional-grade accessories for optimal espresso shots.
For quick daily coffee preparation with minimal waiting
AmasteThe Amaste's Thermoblock boiler offers faster heat-up times, allowing for quicker espresso preparation without significant waiting, especially for those not prioritizing ultra-precise temperature control.
For budget-conscious buyers seeking the best value for advanced features
COWSARAt $317.36, the COWSAR provides PID temperature control, a 58mm portafilter, and 30 grind settings, offering significantly more advanced features for a slightly lower price than the Amaste.
For making a variety of milk-based drinks like lattes and cappuccinos
COWSARWhile both have steam wands, the COWSAR's 58mm portafilter and overall build often pair with a more capable steam wand and a better workflow for milk texturing, as indicated by its 'Perfect for Home Café-Pro' branding.
Who Should Buy Which?
Find the right product for your needs
Buy Amaste if...
Amaste Espresso Machine with
The Amaste Amaste Espresso Machine is ideally suited for the casual home coffee drinker or an espresso novice who values convenience and speed above intricate control. This buyer appreciates a machine that heats up quickly for their morning routine, thanks to its Thermoblock boiler, and doesn't want to spend excessive time dialing in complex settings. They likely make one or two espresso-based drinks daily, primarily for personal enjoyment, and aren't focused on achieving professional-level extraction perfection or experimenting with different accessories. The 68 oz water tank is a significant advantage for them, reducing the frequency of refills and adding to the machine's overall ease of use. While the 51mm portafilter might limit future upgrades, this buyer isn't concerned with extensive customization. They are looking for a reliable, easy-to-operate, all-in-one espresso solution that consistently delivers a good cup of coffee without a steep learning curve, making the Amaste a practical choice for their home kitchen.
Buy COWSAR if...
COWSAR 20 Bar Espresso
The COWSAR COWSAR 20 Bar Espresso Machine is the perfect fit for the ambitious home barista who prioritizes precision, consistency, and the ability to fine-tune their espresso shots. This buyer is willing to invest a little more time in understanding the nuances of espresso making and appreciates features that provide greater control over the final product. The integrated PID temperature control is a critical draw, ensuring stable brewing temperatures for optimal flavor extraction, which is paramount for those chasing the perfect shot. Furthermore, the commercial-standard 58mm portafilter appeals to them, offering compatibility with a wide array of professional-grade accessories, allowing for experimentation and future upgrades. With 30 grind settings, they can meticulously dial in the perfect grind size for their beans, a crucial step for quality espresso. They don't mind the slight wait between brewing and steaming inherent to a single boiler system, understanding it's a trade-off for temperature stability. This user values the journey of mastering espresso and seeks a machine that empowers their passion for crafting high-quality coffee beverages at home.
Spec Comparison
8 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $320 | $317 |
| Rating | 4.1(158) | 4.4(343) |
| Boiler Type | Thermoblock | single |
| Pump Pressure Bars | 15 | 20 |
| Portafilter Size mm | 51 | 58 |
| Steam Wand | Yes | Yes |
| Model Number | AC-517EA | 80020KCM0-Espresso Machine |
| Grinder Included | Yes | Yes |
| Water Reservoir oz | 68 | — |
| PID Temperature Control | — | Yes |
Swipe horizontally to see all columns
Pros & Cons
Quick overview of strengths and weaknesses
Amaste Espresso Machine
- Integrated conical burr grinder
- 15 grind settings for customization
- 15-bar pump with visual pressure gauge
- Low-pressure pre-infusion feature
- 51mm portafilter limits accessory choice
- Lacks PID for precise temperature control
COWSAR 20 Bar
- Integrated burr grinder with 30 grind settings.
- Low-pressure pre-infusion ensures even extraction.
- PID maintains stable brewing temperature consistency.
- 58mm portafilter fits commercial accessories.
- Single boiler requires wait time between brewing/steaming.
- 20-bar pump pressure is often higher than ideal.
Frequently Asked Questions
Common questions about this comparison
Which machine offers better temperature stability for brewing espresso?
The COWSAR machine features PID temperature control, which actively maintains a stable brew temperature, crucial for consistent espresso extraction. The Amaste uses a Thermoblock, which heats up faster but is generally less stable.
What is the practical difference between a 51mm and 58mm portafilter?
A 58mm portafilter (COWSAR) is the commercial standard, providing access to more aftermarket accessories like tampers and baskets. A 51mm portafilter (Amaste) offers fewer accessory options, potentially limiting customization and upgrade paths.
Do both machines include an integrated coffee grinder?
Yes, both the Amaste and COWSAR machines come with an integrated burr grinder. The COWSAR offers more grind settings (30 vs. 15), providing greater precision for dialing in your espresso shot.
Is 20 bar pump pressure (COWSAR) better than 15 bar (Amaste)?
While higher, 20 bar isn't necessarily better; ideal espresso extraction is around 9 bars. Both machines' pumps generate pressure that is then regulated. The COWSAR's high pressure, combined with PID, aims for controlled extraction.
Which machine would be faster to make a single shot of espresso?
The Amaste with its Thermoblock boiler generally heats up quicker than the COWSAR's single boiler, allowing for a faster start to brewing your first espresso shot.
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