The Thieaudio Hype 4 is 17Ω at 105.0 dB (no reference unit printed); the Thieaudio Hype 4 MKII is 18Ω at 101.0 dB (no reference unit printed). This page covers what they ask of an amplifier, not how they sound.
The Hype 4 MKII needs 4.0 dB more than the Hype 4 to reach the same loudness — 0.79 mW against 0.32 mW.
| Specification | Hype 4 | Hype 4 MKII |
|---|---|---|
| Impedance | 17 Ω | 18 Ω |
| Sensitivity | 105.0 dB | 101.0 dB |
| Sensitivity (voltage) | 122.7 dB/V | 118.4 dB/V |
| Power for 100 dB | 0.32 mW | 0.79 mW |
| Voltage for 100 dB | 73 mV | 0.12 V |
| Current for 100 dB | 4.3 mA | 6.6 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 2.12 Ω | 2.25 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
One caution before reading the rows. Thieaudio Hype 4 and Thieaudio Hype 4 MKII printed a decibel figure with no reference unit, so this page reads it as per milliwatt. If it is really per volt, each of them needs far more than the table says. Why the two readings differ by so much.
Every source in the database that drives one of them drives the other. On power, the choice between these two changes nothing about what amplifier you need.
2 sources stay below the audible-hiss threshold with the Hype 4 MKII but cross it with the Hype 4 (FiiO BTR11, Rupert Neve RNHP).
280 of the 280 sources here reach 100 dB on both.
The Hype 4 MKII is more demanding than 39% of the 567 non-electrostatic models in this database; the Hype 4 than 23%.
| dB SPL | Hype 4 power | Hype 4 voltage | Hype 4 MKII power | Hype 4 MKII voltage |
|---|---|---|---|---|
| 80 | 3.2 µW | 7 mV | 7.9 µW | 12 mV |
| 85 | 0.01 mW | 13 mV | 0.03 mW | 21 mV |
| 90 | 0.03 mW | 23 mV | 0.08 mW | 38 mV |
| 95 | 0.10 mW | 41 mV | 0.25 mW | 67 mV |
| 100 | 0.32 mW | 73 mV | 0.79 mW | 0.12 V |
| 105 | 1.0 mW | 0.13 V | 2.5 mW | 0.21 V |
| Source | Price | Headroom, Hype 4 | Headroom, Hype 4 MKII | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 17.0 dB | 13.3 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 28.8 dB | 24.7 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 25.7 dB | 21.6 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. 67 of them also publish an output impedance low enough for both under the one-eighth rule and a noise figure that stays below the audible-hiss threshold with both.
The cheapest of the 67 is the JadeAudio JA11, at $20. It leaves 17.0 dB of headroom on the Hype 4 and 13.3 dB on the Hype 4 MKII, its output impedance is 0.5 Ω against a one-eighth limit of 2.12 Ω and 2.25 Ω, and its noise figure puts the hiss floor 13 dB and 17 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| Hype 4 | nothing printed | — | — |
| Hype 4 MKII | 5Hz–22kHz | not printed | not printed |
Thieaudio prints nothing at all for the Hype 4 and 5Hz–22kHz for the Hype 4 MKII.
So one side of this comparison has a frequency-response number and the other does not — which changes less than it looks. The range printed for the Hype 4 MKII comes with no tolerance beside it, and a range without a ±dB figure says nothing about how loud the headphone is at either end of it: thirty decibels down at the bottom and the sentence would still be true. On the only reading that would have made it a specification, the two sheets say the same amount: nothing.
Not a measurement; maker by maker.
Both have a page of their own. In full: Thieaudio Hype 4 and Thieaudio Hype 4 MKII. Each figure on this page is labelled on those pages with where it came from, including the ones Thieaudio never published — what that maker publishes, counted.