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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
IWISTAO HIFI Tube Earphone Amp 1W output 32 to 600 ohm & Class A Tube Amplifier 2X8W 6N2 Drive FU19 Built 6.5mm JackPackage: Yes PCM: No Built in Battery: No Channels: 2 (2. 0) Output Power: 1W Recommended Headphone Impedance: 501 600 Ohm Input Type: LINE IN (AUDIO IN) Output Type: LINE OUT (AUDIO OUT) DSD (Direct Stream Digital): No Bluetooth: No Brand Name: IWISTAO Dimensions (WxHxD): 320 mm* 180 mm * 160 mm WIFI: No Type: Professional Amplifier Earphone amplifier output: 1W Output impedance of Earphone amplifier: 32 ~ 600 ohm Output power of tube amp: 2 x 8W (4
Package:YesPCM:No
Built-in Battery:No
Channels:2 (2.0)
Output Power: 1W
Recommended Headphone Impedance: 501-600 Ohm
Input Type: LINE IN (AUDIO IN)
Output Type: LINE OUT (AUDIO OUT)
DSD (Direct Stream Digital):No
Bluetooth:No
Brand Name:IWISTAO
Dimensions (WxHxD):320 mm* 180 mm * 160 mm
WIFI: No
Type: Professional Amplifier
Earphone amplifier output: 1W
Output impedance of Earphone amplifier:32 ~ 600 ohm
Output power of tube amp:2 x 8W (4 ohm)
Frequency response: 26-38 KHz +/- 2dB
Total harmonic distortion: Less than 0.008% (10Hz to 20 kHz)
Signal to Noise Ratio: Greater than 118dB (A weight)
Net weight (W*D*H):6.2kg
Operating voltage:110 ~ 240V / 50 ~ 60 Hz
Output Type:RCA
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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4.3 ★★★★★
Based on 142 reviews
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Product Reviews
★★★★★ 5
Best fluffy but firm pillows
Size: King(Pack of 2), Size: King(Pack of 2)
These pillows are worth every penny! They started off pretty flat but after three days they plumped up well. In addition to them being plump, they are also firm. Exactly what I was looking for. You can shake up the internal stuffing if you want them softer too. They were a bit pricey but I’m going to repurchase and replace all my home pillows with these. I do sleep hot and the cooling side is perfect to lay on. Kept me cool and comfortable. I haven’t had any neck or back pain after switching to these pillows too. Absolutely recommend these for your home. The photo shows how full the pillows are. I have four pillows in the picture plus two smaller other brands. These are definitely fluffier.
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Reviewed in the United States on January 8, 2026
★★★★★ 5
It works! Quality pillow.
Size: Standard (1 Count), Color: Original White (Cooling)
This does actually provide a cooling effect, and it's very comfortable! The accompanying literature is helpful too. I believe this to be a quality pillow for the price.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Most comfortable pillow I’ve ever slept on
Size: Queen (1 Count), Color: Crescent White(cooling)
This is the most comfortable pillow I have ever slept on. It doesn't mash down like other pillows. Cradles my neck perfectly plus it’s cool. I broke my neck a couple of years ago and this pillow feels very good and comfortable. Definitely recommend to everyone. Ive used it since May and it’s retained its shape.
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Reviewed in the United States on June 6, 2026
★★★★★ 4
Smell
Size: Queen (2 Count), Color: Original White (Cooling)
The fact that there are not more comments on the smell of these pillows has me worried about some of yall. Listen, I LOVE the weight, and the firmness, it’s perfect for that. However, these pillows are RANK. They have a very strong mildew-ish smell that lingers. I took the outer cover off and washed it and let the pillow air out for a few days, the smell is still very strong when you press your face against it, which one does because it is in fact designed for that purpose. It smells so bad. It’s nauseating. I can smell it through two pillowcases and blanket that I threw on top of them hoping an extra layer would trap the smell. I’ll bake them in the Texas sun tomorrow and hope that helps, because otherwise these are the perfect pillows for someone who wants to feel like they are hugging a torso but can’t stand the sound/feel of someone else breathing. I don’t know…4 stars, if the smell goes away I’ll come back.
Update: many many days later. Either they don’t really smell anymore or I got use to it. They’ve held their firmness and shape well. I like them.
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Reviewed in the United States on March 9, 2026
★★★★★ 5
Actually Cooling Pillow
Size: Queen (1 Count), Color: Original White (Cooling)
This is a really nice pillow, I was worried it would be too soft or too firm but it's just right and it's actually cooling, it feels cool every time I touch it. I've noticed an improvement in sleep since using it. Would recommend!
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Reviewed in the United States on May 27, 2026