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Grandmax SPKR-GR1-BK Tweakers GoRock Portable Speakers (Black)

4.5 out of 5 stars 121 customer reviews

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Black
  • Unique patented twist open pop-up acoustic chamber delivers enriched audio
  • Frequency-tuned amplifier delivers crystal clear sound
  • Built-in long-life rechargeable lithium battery. Simply recharge with the supplied USB charge cable
  • 3.5mm audio plug connects to iPod, iPhone, laptop, and other popular devices
2 new from $8.50

Technical Details

Color: Black
  • Brand Name: Grandmax
  • Model Number: SPKR-GR1-BK
  • Item Display Weight: 2.50 pounds
  • Color: Black

Product Description

Color: Black

Go-Rock America Portable Speakers provide monster sound in a small package. Simply twist open to expand the acoustic chamber for enhanced audio and crystal clear sound. All connections are retractable, so there are no messy cords to untangle. The built-in long-life lithium battery lasts for hours and quickly recharges from any USB port with the supplied charge cable.

Product Information

Color:Black
Product Dimensions 8 x 5 x 2 inches
Item Weight 5.6 ounces
Shipping Weight 8 ounces
ASIN B005DSO8C0
Item model number SPKR-GR1-BK
Customer Reviews
4.5 out of 5 stars 121 customer reviews

4.5 out of 5 stars
Best Sellers Rank #574 in Electronics > Accessories & Supplies > Cell Phone Accessories > Portable Speakers & Audio Docks > Audio Docks
#34,676 in Electronics > Portable Audio & Video > MP3 & MP4 Players & Accessories > MP3 & MP4 Player Accessories
#252,426 in Electronics > Cell Phones & Accessories

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Mark Colan VINE VOICE on October 3, 2009
Color: Black
PROS:
Very small and light, highly suitable for traveling
Sound is very good for voice (e.g. podcasts)
Louder and better sound than my T60p laptop
Rechargeable battery
Very inexpensive
Attractive design
Available in four colors (black, silver, metallic red, blue)

CONS:
Music sound quality will not please everybody
If you lose the adapter, you can't recharge, and the adapter is not common
Rechargeable batteries eventually become unuseable, and these would be hard to replace
Cannot play and charge at the same time

This stereo speaker pair is very small, fits easily in my computer bag for travel. The sound is good for their size, but does not rival larger speakers. Voices are very clear; music is worth listening to, but not full range. Sound is considerably louder, and somewhat more full, than the speakers on my Thinkpad T60p laptop.

The sound is nowhere near as good as Koss "The Plug" earbuds, which cost even less, but don't let you walk around or share the sound.

They are very convenient to use - plug the audio plug into your computer or player, plug a mini-USB plug from one speaker into the other, turn the switch on. For better bass, untwist each speaker to let it expand - makes a small but noticeable difference. When storing, magnets help stick them together, making it easier to stuff them into the included storage bag (black net material).

The audio connector is a very standard 1/8" (3.5mm) stereo mini-phone-plug, and will fit many laptops, most mp3 player headphone jacks, and many other devices that accept headphones.

The wires are not long. This limits the separation of the speakers to something over a foot. This is not a problem for me.
Read more ›
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Color: Black
These speakers are ideal for those looking for tiny speakers without the need for sound quality. Here's the good and bad:

Good: Size & Portability, these things are tiny and they roll up to a slightly longer egg sized shape. Everything is built onto the speaker with the cabling nicely rolled into the unit.
Good: Loudness, They do get much louder than my Macbook which frankly, sucks.
Good: Built in Battery, they have a battery which is built into the unit.

Bad: Sound Quality, The sound is muddy and not clear at all. Although they sound better than the Macbook(Unibody) speakers, they don't sound better than my Dell Inspirion 6400 speakers. They are no where near as good as any desktop speakers. Trebles are way too high, Mids are non existent and bass is iffy with or without the expansion unit. Sounds tend to echo.
Bad: You cannot charge and play at the same time. The charger end actually connects to the other speaker so this is not possible.

Bottom line: If you're looking for a speaker for your iPod or mp3 player, look elsewhere. If you're looking to increase the volume (without improving sound quality) on your laptop and space/size is important, this will work for you.

Anyone giving 5 stars to this probably still listens to their AM radio...
8 Comments 46 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Color: Black
Just got a set of these from office depot for 20 bucks, and all I can say is WOW! each is only a little bigger than a golf ball and they deliver decent sound and volume. I'm using these on my laptop right now and they're literally almost too loud for the hotel room I'm in at half-volume. I'd highly recommend these for anyone who travels.
1 Comment 11 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Color: Black
PROS:
Very small and light, highly suitable for traveling
Sound is very good for voice (e.g. podcasts)
Louder and better sound than my T60p laptop
Rechargeable battery
Very inexpensive
Attractive design
Available in four colors (black, silver, metallic red, blue)

CONS:
Music sound quality will not please everybody
If you lose the adapter, you can't recharge, and the adapter is not common
Rechargeable batteries eventually become unuseable, and these would be hard to replace
Cannot play and charge at the same time

This stereo speaker pair is very small, fits easily in my computer bag for travel. The sound is good for their size, but does not rival larger speakers. Voices are very clear; music is worth listening to, but not full range. Sound is considerably louder, and somewhat more full, than the speakers on my Thinkpad T60p laptop.

The sound is nowhere near as good as Koss "The Plug" earbuds, which cost even less, but don't let you walk around or share the sound.

They are very convenient to use - plug the audio plug into your computer or player, plug a mini-USB plug from one speaker into the other, turn the switch on. For better bass, untwist each speaker to let it expand - makes a small but noticeable difference. When storing, magnets help stick them together, making it easier to stuff them into the included storage bag (black net material).

The audio connector is a very standard 1/8" (3.5mm) stereo mini-phone-plug, and will fit many laptops, most mp3 player headphone jacks, and many other devices that accept headphones.

The wires are not long. This limits the separation of the speakers to something over a foot. This is not a problem for me.
Read more ›
Comment 8 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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