This is a pair of Grado Hemp Headphone, Limited Edition driver units, brand new and original product of Grado Labs, with 44mm (43.8mm actual value) diameter diaphragm and 38 ohms impendence.
Worries about how to reproduce original Grado Hemp sound character? See the DIY suggestions for simple and ensured fine tuning instructions! Or select the Fine Tune option to let our professionals do it for you, totally free!
Note in some reviews authors may claim “50mm drivers”, it is because the outer sleeve being counted in.
Also note it looks like PS1000e drivers, but the impendence is higher (38 instead of 32 ohms) and the height is 2mm higher to accommodate bigger coils.
We recommend them for DIY with our PS1000e, GS2000e, GS3000e kits, or as replacement for hemp headphone drivers, or upgrade Grado mid/low-end headphones for premium sound quality. Following are compatible series:
- Grado SR80, SR80e
- Grado SR225
- Grado M1
- Grado SR60, SR60e
- EDL GS2000e, GS3000e
- EDL PS1000e
Know About Grado Hemp Headphone, Limited Edition
The first of its kind, hemp finds yet another purpose in The Hemp Headphone. A brilliant, warm, and precise sound rolled into a Limited Edition Grado.
Sound Impressions from Headfonics
Grado isn’t really known for excessive oomph down yonder, but shockingly, this Hemp responds very well to EQ and DSP alteration. The stock sound signature is typical Grado, fairly bass light. However, crank up the bass to a +6dB and see what happens. The low-end body blossoms and the entire experience fills out, thickens up, and becomes livelier.
I love my PS500. But, I like this Hemp more. This headphone is warmer, cleaner, and responds better to some bass boost. This is less neutral, more musical in tonality on the bass side and that becomes apparent only when you boost a little, as the stock bass experience is right in the middle somewhere.
Same song and source, the same EQ set to +dB of bass via realbassexciter (a Foobar2000 DSP), and attempting to parallel the volume levels of each headphone, results in the Hemp retaining control much better than the PS500.
Bass Fidelity and Tonality
As mentioned, the fidelity of the bass experience is excellent for this price. I think this is the best Grado has offered in terms of price to performance. Don’t let the pot jokes fool you, or the branding.
This is a serious product at the end of the day and it absolutely sounds fantastic. I can’t name any other $450 and under headphones that check-marked this many boxes for me.
In raw purity, the headphone is not going to please the accurate and neutral, or clinical enthusiasts. Again, that is because the headphone is on the warm and musical side of the spectrum.
Now, that is not to say that it is “very” warm and thus ruining any potential for accurate experiences in your sources. That isn’t the case. It is a step or two into warm sounding and with boosting, as well as proper DSP usage, the Hemp can be vividly musical and warm. But, the stock sound is not more than a step or two into warmth tonal offering on the low end.
DIY suggestions (Sound fine tune)
Headphone drivers need to be fine tuned based on the acoustic structure of the headphone shells, etc. Normally it requires special expertise and professional instruments.
Grado headphone shell is fully open and makes the tuning very easy and straightforward. Simply cover the 2 holes as shown below you will get 100% Hemp sound reproduced! Note you may use double-sided tapes or other tapes. The key is fully blocking the air flow. And if you prefer more bass or highs than original, you can unblock or block 1 more hole.
Note: the dynamic drivers have been paired to ensure sound and quality fully balanced between right and left channels. Therefore we don’t offer single unit.
Soldering: overheated (>250 degree C) soldering iron or overtime soldering (>2s) may permanently damage the driver. Please managed down both in your DIY.
- Installation: the driver has Sintered NdFeB Magnetic inside with extremely strong attraction power. Damage may caused by attracting anything hitting the fragile diaphragm.
- Others: applying high-voltage, storing in high temperature/humidity environment… all may cause unrecoverable damage.