Bottlehead Crack + Speedball Upgrade Amp Kit

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Product Description

Reviewers have been shouting praise since its release. Here's one from Bottlehead's website: "The Bottlehead Crack is a superb introduction into the world of DIY audio Read More

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Specs

Input Impedance: 100K ohms
Output Impedance: 120 ohms
Gain: about 15dB into a 300 ohm load like a Sennheiser HD600
Max Output: about 10V into a 300 ohm load
Power: AC 100-120V
Weight: 5.5lbs
Dimensions: 11.25 x 7.25 x 3.5 (L x W x H inches)

Great Headphones Matchups

AKG K141M (600 ohms), K240, K240M, K240DF (600 ohms), K241 (600 ohms), K250 (600 ohms), K260, K260 pro (600 ohms), K340 (360 ohms)
Beyerdynamic DT 100 (400 ohms), DT 150 (250 ohms), DT 250-250 (250 ohms), DT 411 (250 ohms), DT 511 (250 ohms), DT 531 (250 ohms), DT 550 (600 ohms), DT 660 MKII (600 ohms), DT 770 (250 ohms), DT 770 (600 ohms), DT 770 pro (250 ohms), DT 801 (250 ohms), DT 811 (250 ohms), DT 831 (250 ohms), DT 880 (250 ohms), DT 880M (600 ohms), DT 880 Pro (250 ohms), DT 880 S (600 ohms), DT 901 (250 ohms), DT 911 (250 ohms), DT 931 (250 ohms), DT 990 (250 ohms), DT 990 Pro (250 ohms) Tesla T1 (600 ohms)
Sennheiser HD 222 (600 ohms), HD 230 (600 ohms), HD 250 II (300 ohms), HD 420 (600 ohms), HD 420SL (600 ohms), HD 425 (600 ohms), HD 430 (600 ohms), HD 540 (600 ohms), HD 560 II (300 ohms), HD 580 (300 ohms), HD 600 (300 ohms), HD 650 (300 ohms), HD 800 (300 ohms) , HDC 451 (250 ohms), PXC 150 (300 ohms), PXC 250 (300 ohms), PXC 300 (300 ohms)
Koss Pro 4AA (250 ohms) Pro 4AAT (250 ohms)
MB Quart QP400 (300 ohms)