Comparing: Cyrus 40 AMP and Cyrus 40 ST.
| GENERAL | ||||
| Brand Name | Cyrus  | Cyrus | ||
| Product Name | Cyrus 40 AMP | Cyrus 40 ST | ||
| April 2025 | November 2024 | |||
| $4995 | $3995 | |||
| Manufacturer URL | cyrusaudio.com | cyrusaudio.com | ||
| IMAGES | ||||
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| FEATURES | ||||
| ✔ | ✔ | |||
| ✔ - ESS ES9039Q2M | ✔ - ESS ES9039Q2M | |||
| ✔ - 2x 100W at 6Ohm | ✘ | |||
| ✔ | ✘ | |||
| ✔ - 5 inch touch | ✔ - 5 inch touch | |||
| STREAMING | ||||
Onboard Apps | Via BluOS app: Amazon Music, Bugs, CustomChannels, Deezer, IDAGIO, KKBOX, Napster, Neil Young Archives, nugs.net, Pandora, Presto Music, Qobuz, QPlay, Qsic, Spotify, SOUNDMACHINE, TIDAL, Tunify | Via BluOS app: Amazon Music, Bugs, CustomChannels, Deezer, IDAGIO, KKBOX, Napster, Neil Young Archives, nugs.net, Pandora, Presto Music, Qobuz, QPlay, Qsic, Spotify, SOUNDMACHINE, TIDAL, Tunify | ||
Streaming | Airplay 2 | Airplay 2 | ||
| ✔ | ✔ | |||
LAN Access | ||||
| DIGITAL INPUTS | ||||
| TOSLINK Optical | ✔ | ✔ | ||
| Coaxial Optical | ✔ - x2 | ✔ | ||
| Bluetooth | ✘ | |||
| HDMI ARC | ✔ | ✘ | ||
| HDMI eARC | ✘ | |||
| HDMI IIS | ✘ | ✘ | ||
| USB (Media) | ✔ - USB-B | ✔ - USB-A | ||
| USB (Audio DAC) | ✔ - USB-B | ✘ | ||
| Other | ||||
| ANALOG INPUTS | ||||
| RCA | ✔ - x4 | ✘ | ||
| XLR | ✘ | ✘ | ||
| Phono | ✔ - MM with ground | ✘ | ||
| Other | ✘ | ✘ | ||
| DIGITAL OUTPUTS | ||||
| TOSLINK Optical | ✘ | ✔ | ||
| Coaxial Optical | ✘ | ✔ | ||
| USB | ✘ | ✘ | ||
| Bluetooth | ✘ | ✘ | ||
| HDMI | ✘ | ✘ | ||
| HDMI IIS | ✘ | ✘ | ||
| AES/EBU | ✘ | ✘ | ||
| Other | ||||
| ANALOG OUTPUTS | ||||
| RCA | ✔ - SNR 105dB THD+N 0.002% | ✔ - x2. SNR 117dB THD+N 0.002% | ||
| XLR | ✘ | ✘ | ||
| Headphone | ✔ - 3.5mm | ✘ | ||
| Passive Speaker | ✔ | ✘ | ||
| Subwoofer | ✔ | ✘ | ||
| Other | ||||
| SOFTWARE | ||||
| Multi-Room | BluOS WIRELESS MULTI-ROOM | BluOS WIRELESS MULTI-ROOM | ||
| EQ | ||||
| App Remote | ✔ - BluOS App for Android/iOS. Integrates with Control4, Creston, Alexa and others. | ✔ - BluOS App for Android/iOS. Integrates with Control4, Creston, Alexa and others. | ||
| Control | ||||
| HARDWARE | ||||
| Ethernet | ✔ - Gigabit | ✔ - Gigabit | ||
| WI-FI | ✔ - Wi-Fi 5. 2.4+5GHz | ✔ - Wi-Fi 5. 2.4+5GHz | ||
| Audio Processor | ||||
| OP-AMP Chip | ||||
| Operating System | BluOS | BluOS | ||
| Internal HDD/SSD | ||||
| CPU | ||||
| Internal RAM | ||||
| Internal Storage | ||||
| Power Supply | Fixed 100V or 230V. 50/60Hz. Optional external ‘40’ PSU | 100-230V 50/60Hz. Optional external ‘40’ PSU | ||
| Power Usage | 500W max, <0.5W standby | 30W max, <0.5W standby | ||
| Remote | ✔ - ‘40’ remote | ✔ - ‘40’ remote | ||
| Dimensions | 385x220x88mm | 385x220x88mm | ||
