Technical specifications
Both devices share the same core audio architecture: dual Cirrus Logic CS43198 DAC chips paired with dual SGM8262-2 operational amplifiers. However, their implementation differs subtly:
TC44Pro E3:
- Output Power: ≥175mW @ 32Ω (3.5mm), ≥510mW @ 32Ω (4.4mm)
- Output Voltage: 2.35Vrms (3.5mm), 4Vrms (4.4mm)
- SNR: ≥123dB
- Dynamic Range: ≥120dB
- THD+N: ≤0.004%
TC44Grip:
- Output Power: ≥80mW @ 32Ω (3.5mm), ≥330mW @ 32Ω (4.4mm)
- Output Voltage: 1.7Vrms (3.5mm), 3.3Vrms (4.4mm)
- SNR: ≥125dB
- Dynamic Range: ≥125dB
- THD+N: ≤0.0004%
Eye 3 clearly trades some technical chops for raw power output, particularly through its balanced connection. Both support PCM up to 32bit/768kHz and native DSD256 decoding, though E3 maxes out at 384kHz PCM. Grip’s superior signal-to-noise ratio and dynamic range figures suggest more refined circuitry, likely benefiting from the larger form factor and dedicated charging management chips.
Usability and features
E3: simplicity with compromises
Eye 3’s approach to features can be summed up in one word: minimal. You get 60-step independent volume control, a low/high gain switch, and bit rate indication lights. That’s it. No Bluetooth, no app support, no digital filters, just the essentials.
The removable cable system is genuinely convenient for storage and replacement, while the included cable is a thing of beauty: nylon-braided, flexible, and featuring connectors that aesthetically match the main body.
Operating E3 requires patience and precision. Those embedded buttons are fiddly at best, and you’ll find yourself accidentally adjusting volume when you meant to toggle gain. It’s the sort of interaction design that prioritises looks over usability, form following function right off a cliff.
TC44Grip: complexity with purpose
Grip’s feature set is considerably more ambitious. The magnetic mounting system works brilliantly once you’ve found the sweet spot for pad placement (DD HiFi recommends 10mm from your phone’s bottom edge, though this isn’t critical). The attraction is strong enough for confident daily use with the aluminium pad, while the leather options provide a gentler hold for occasional attachment.
The real game-changer is the integrated charging capability. Whether you’re on a long flight binge-listening to Lana Del Rey’s Ocean Blvd or simply don’t want to choose between battery life and audio quality, the ability to simultaneously charge and listen is genuinely liberating. The system supports up to 60W PD fast charging, though actual charging speeds will depend on your device’s capabilities.
Cable management is thoughtfully executed. The groove system allows the cable to slide in and out smoothly, preventing the tangled mess that traditional dongles often become. When not in use, the cable can be partially retracted, creating a more compact profile.
However, this convenience comes with caveats. The magnetic pad, particularly the aluminium version, could potentially scratch your phone’s back panel despite its adhesive backing. Many users will also need to attach it to a phone case, which somewhat defeats the seamless integration promise.
Despite the innovations and compromises along the way, it’s ultimately how these new dongles sound that’s going to matter most.
Continue to sound impressions…
