Both are Bluetooth receivers, $219 against $199. This page puts them side by side on the only three things a maker can be held to — power, output impedance and noise — and then asks the question that actually matters: which headphones do they treat differently?
The Shanling UP6 reaches 100 dB on 566 of the 567 models here, the iFi GO blu on 563.
| Specification | iFi GO blu | Shanling UP6 |
|---|---|---|
| Power into 32Ω | 165 mW | 626 mW |
| Power into 150Ω | 35 mW | 134 mW |
| Power into 300Ω | 18 mW | 67 mW |
| Power into 600Ω | 8.8 mW | 33 mW |
| Output impedance | 1.0 Ω | not published |
| Output noise | not published | not published |
| Price | $219 | $199 |
| Headphones it reaches 100 dB on out of 567 | 563 | 566 |
A figure marked not published is missing from the maker’s own material, which is not the same as being good or bad. Where one of these two publishes a number and the other does not, the comparison on that axis cannot be made at all — and saying so is more useful than guessing.
3 headphones reach 100 dB on the Shanling UP6 but not on the iFi GO blu — Moondrop PARA, Symphonium Crimson, Symphonium Helios.
563 of the 567 models here reach 100 dB on both. That is a power count and nothing more; whether either source suits a given headphone also depends on the two lines above.
Each has a page of its own with every power figure traced to what the maker published and a full headphone list: iFi GO blu and Shanling UP6. Or put either against your own headphones in the source comparison tool.