Does the JDS Labs Atom Amp 2 drive the Audio-Technica ATH-R70x?
Computed from rated specifications · target SPL 110 dB · load 600 Ω
Verdict
AdequateThe JDS Labs Atom Amp 2 adequately drives the Audio-Technica ATH-R70x with limited margin (~9.6 dB headroom at 600 ohms; needs ~15.8 mW, delivers 143 mW).
Headroom
9.6 dB
9.6 dB
Required (110 dB SPL)
15.8 mW
15.8 mW
Delivered (@ 600 Ω)
143 mW
143 mW
Required voltage
2.73 Vrms
2.73 Vrms
Audio-Technica ATH-R70x
Dynamic · over-ear
| Impedance | 470.0 Ω rated |
| Sensitivity | 98.0 dB/mW rated |
| Driver | Dynamic |
| Spec basis | Rated |
Rated: Audio-Technica official spec (470 Ω, 98 dB/mW at 1 kHz). RAA has no measurement page.
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JDS Labs Atom Amp 2
Desktop Ss · Single Ended
| Output impedance manufacturer | 0.1 Ω |
| Power @ 32 Ω | 2650 mW |
| Power @ 150 Ω | 570 mW |
| Power @ 300 Ω | 286 mW |
| Power @ 600 Ω | 143 mW |
| Power source | Manufacturer |
JDS Labs product page: 2650/570/286/143 mW at 32/150/300/600 Ω per channel. All published — no derivations. Output impedance <0.1 Ω from manufacturer.
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Where to buy
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Other amplifiers for the Audio-Technica ATH-R70x
| Amplifier | Headroom |
|---|---|
| Schiit Lyr 3 | Ample 14.5 dB |
| Schiit Valhalla 2 | Ample 14.5 dB |
| Topping L30 | Adequate 9.5 dB |
| Topping A90 | Adequate 9.0 dB |
| iFi Zen DAC V2 | Marginal 0.6 dB |
| Apple USB-C to 3.5mm | Insufficient -10.0 dB |
Other headphones the JDS Labs Atom Amp 2 can drive
| Headphone | Headroom |
|---|---|
| Koss Porta Pro | Ample 29.8 dB |
| Grado SR80x | Ample 29.5 dB |
| HiFiMan Arya | Ample 19.2 dB |
| AKG K702 | Ample 18.6 dB |
| Beyerdynamic DT 770 Pro 250 | Adequate 9.0 dB |
| Beyerdynamic DT 990 Pro | Adequate 7.9 dB |