Short answer
Both are dongles, both at $70.
The EPZ TP35 Pro reaches 100 dB on 561 of the 567 models here, the DUNU DTC 480 on 554.
| Specification | DUNU DTC 480 | EPZ TP35 Pro |
|---|---|---|
| Power into 32Ω | 65 mW | 112 mW |
| Power into 150Ω | 14 mW | 24 mW |
| Power into 300Ω | 6.9 mW | 12 mW |
| Power into 600Ω | 3.5 mW | 6.0 mW |
| Output impedance | not published | not published |
| Output noise | not published | not published |
| Price | $70 | $70 |
| Headphones it reaches 100 dB on out of 567 | 554 | 561 |
Not published means the maker leaves it out, so that axis cannot be compared.
| Balanced | DUNU DTC 480 | EPZ TP35 Pro |
|---|---|---|
| Socket | 4.4mm | 4.4mm |
| Power into 32Ω | 150 mW | 262 mW |
| Power into 300Ω | 16 mW derived | 28 mW derived |
| Output impedance | not published | not published |
| Output noise | not published | not published |
| Headphones it reaches 100 dB on out of 567 | 563 | 565 |
Through the balanced sockets the EPZ TP35 Pro reaches 100 dB on 565 of the 567 models here and the DUNU DTC 480 on 563. Derived figures are worked out from the loads the maker did publish.
| Load | DUNU DTC 480 | EPZ TP35 Pro |
|---|---|---|
| 32 Ω | Published | Published |
| 150 Ω | Derived | Derived |
| 300 Ω | Derived | Derived |
| 600 Ω | Derived | Derived |
Both makers publish a power rating. DUNU DTC 480 publishes at 32 Ω; EPZ TP35 Pro at 32 Ω. The other rows are worked out from those.
The two publish at the same loads, which is the one case where the rows of this table can be read straight across.
7 headphones reach 100 dB on the EPZ TP35 Pro but not on the DUNU DTC 480 — HiFiMAN HE-6se V2, HiFiMAN HE6 Remastered, HiFiMAN Susvara, 4 more.
554 of the 567 models here reach 100 dB on both.
Headroom is at a 100 dB SPL peak.
The widest gap on the list is the Sennheiser HD 600: EPZ TP35 Pro has +3 dB of headroom there against +0 dB. 2 dB is about 1.7 times the power, which matters for peaks rather than for how loud the music sits.
The hiss columns are empty for DUNU DTC 480 and EPZ TP35 Pro because neither maker publishes no output noise figure.
| Headphone | Impedance | Needs | DUNU DTC 480 headroom | EPZ TP35 Pro headroom | DUNU DTC 480 hiss | EPZ TP35 Pro hiss |
|---|---|---|---|---|---|---|
| Shure SE846 | 9 Ω | 0.04 mW | +27 dB | +29 dB | not published | not published |
| Campfire Audio Andromeda 2020 | 9 Ω | 4.0 mW | +7 dB | +9 dB | not published | not published |
| Audeze LCD-2 Classic | 70 Ω | 0.79 mW | +16 dB | +18 dB | not published | not published |
| Beyerdynamic DT 1990 Pro (250Ω) | 250 Ω | 0.63 mW | +11 dB | +14 dB | not published | not published |
| HiFiMAN HE400se | 25 Ω | 7.9 mW | +8 dB | +10 dB | not published | not published |
| Audio-Technica ATH-R70X | 470 Ω | 1.6 mW | +4 dB | +7 dB | not published | not published |
| Sennheiser HD 600 | 300 Ω | 6.6 mW | +0 dB | +3 dB | not published | not published |
| HiFiMAN Susvara | 60 Ω | 50 mW | -2 dB | +1 dB | not published | not published |
These two cost the same, $70, so price settles nothing. Out of the 567 models here, the EPZ TP35 Pro drives 7 models to 100 dB — and on the other side there is no such advantage at all.
Only published figures count here; blank axes are counted separately.
Each in full: DUNU DTC 480 and EPZ TP35 Pro.