Product details

Die Verstärker BT20ABT20A PRO, BT30DBT30D PRO und TB10D sind mit austauschbaren orangefarbenen und grauen Knöpfen ausgestattet. Die Anpassung des Erscheinungsbilds des Verstärkers erleichtert es den Benutzern, ihre Einrichtung an ihre individuellen Vorlieben anzupassen.

Um die Knöpfe auszutauschen, benötigen Sie lediglich ein Tuch mit Reibung. Fassen Sie den vorhandenen Knopf fest an und ziehen Sie ihn gerade von der Achse ab. Richten Sie dann den neuen Knopf auf der Achse aus und drücken Sie ihn fest an. Stellen Sie sicher, dass der neue Knopf vor dem Gebrauch sicher befestigt ist.

FAQs

Please read our FAQs page to find out more.

How to: Choose the right banana plug?
  • Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
  • Easy to wire up and solidly connect to amplifier and passive speaker.
  • If they do not fit, use a little force to tighten the plugs.
  • Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
  • Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
How to Diagnose Power Supply Failure?
  • The following situations may cause this issue
  • Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
  • Possible solution
  • Check if the power supply is illuminated when plugged into AC by itself.

    Plug power supply into a different socket.

    Test the adapter with a meter.

    Try a different power supply (within a range of DC input).

    Test the included power supply on other electrical equipment.

    Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
What is a GaN?
  • The GaN supply has a power output of 240W.
  • Offers overload and over-temperature protection.
  • The 48V 5A GaN power supply is also available on Amazon.

Didn’t find your answer?

Don't hestitate to contact us

  • 5 stars: 40 (83%)
  • 4 stars: 8 (17%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
S
Samuel R.
Orange Knob

It’s a knob! Obviously no performance changes but it sure does look pretty!

S
Samuel Ruiz
Orange Knob

It��s a knob! Obviously no performance changes but it sure does look pretty!

D
Dennis
The Orange Knob

It's round, it's orange, it goes to eleven. Can't beat it!

D
Dennis Ouellette
The Orange Knob

It's round, it's orange, it goes to eleven. Can't beat it!

B
Brad C.
Very pleased with my purchase

I'm really happy with my Fosi Blue Tooth amplifier. I bought it to use with a pair of Polk bookshelf speakers as my garage stereo. The quality of sound is very pleasing and the ease of use is fantastic. I had a different class D amp in use and the Fosi gave me a noticeable improvement in sound quality.

B
Brad Cropper
Very pleased with my purchase

I'm really happy with my Fosi Blue Tooth amplifier. I bought it to use with a pair of Polk bookshelf speakers as my garage stereo. The quality of sound is very pleasing and the ease of use is fantastic. I had a different class D amp in use and the Fosi gave me a noticeable improvement in sound quality.

B
Braskel Phillips

Fosi Audio Replaceable Orange & Grey Knob

B
Braskel Phillips

Fosi Audio Replaceable Orange & Grey Knob

D
Denis Régis
New look

It can’t give a different style for hi-fi.

D
Denis R��gis
New look

It can��t give a different style for hi-fi.

D
Dave Bausher
Knob upgrade

Changed my knob color to orange to better match other Fosi equipment in my collection. Super easy to change. Thanks Fosi!

D
Dave Bausher
Knob upgrade

Changed my knob color to orange to better match other Fosi equipment in my collection. Super easy to change. Thanks Fosi!

T
Timothy R.
Orange Knob, nice but not essential

I ordered the orange knob to replace the original black one, for $10.00. With a very small amp face on the BT30D Pro, the orange helps the volume knob to stand out especially to someone not familiar with the setup. So I'm glad I got it. With that said, I believe they should provide the two knob options at no extra cost. I'd even pay $5 over the cost of the amp and feel better about it had they tossed the two knobs into the original package. I mean $10 for a 5 cent piece of plastic?

T
Timothy Roesler
Orange Knob, nice but not essential

I ordered the orange knob to replace the original black one, for $10.00. With a very small amp face on the BT30D Pro, the orange helps the volume knob to stand out especially to someone not familiar with the setup. So I'm glad I got it. With that said, I believe they should provide the two knob options at no extra cost. I'd even pay $5 over the cost of the amp and feel better about it had they tossed the two knobs into the original package. I mean $10 for a 5 cent piece of plastic?

P
Popeye
BT320 pro

Hi I thought was 50w 8 ohm but is not as loud as a 25w Dayton audio HTA100 Integrated Stereo Hybrid Tube Amplifier 100 Watts class D ? Not sure what’s up there also bought Fosi audio amp/ speaker switcher

J
Joel Young
BT320 pro

Hi I thought was 50w 8 ohm but is not as loud as a 25w Dayton audio HTA100 Integrated Stereo Hybrid Tube Amplifier 100 Watts class D ? Not sure what��s up there also bought Fosi audio amp/ speaker switcher

K
Kaspar K.
It looks and feels great..

Some pattern to help with grip would be cool extra to feel under fingers.. but it’s not needed at all.. feels great as is. Insanely overpriced though.. should be an option to all fosi equipment. Or cost like 2 eur max.

K
Kaspar Kuldkepp
It looks and feels great..

Some pattern to help with grip would be cool extra to feel under fingers.. but it��s not needed at all.. feels great as is. Insanely overpriced though.. should be an option to all fosi equipment. Or cost like 2 eur max.

J
Jerry West
Orange knobs

Added a nicer look to amp. I received 2 oranges no gray knob. Was i suppose to get two knobs?

J
Jerry West
Orange knobs

Added a nicer look to amp. I received 2 oranges no gray knob. Was i suppose to get two knobs?

M
Mayan Armijo
Looks Amazing

Great addition to my amp. Look Amazing!

M
Mayan Armijo
Looks Amazing

Great addition to my amp. Look Amazing!

J
Joe T Bryant
Colorful touch

I think all of your equipment should have an orange colored volume control knob. Also would be nice(helpful) is if it either had a knurled surface or machined texture. I have extremely dry fingers and at times a slick smooth surface makes adjusting/gripping something a challenge??

J
Joe T Bryant
Colorful touch

I think all of your equipment should have an orange colored volume control knob. Also would be nice(helpful) is if it either had a knurled surface or machined texture. I have extremely dry fingers and at times a slick smooth surface makes adjusting/gripping something a challenge??

Reviewer avatar
Gregory Klein
Orange Knob

Love it! Gave my P3 a little personality.

G
Gregory Klein
Orange Knob

Love it! Gave my P3 a little personality.

L
Laurent FERNANDEZ
Nice touch to harmonize your Fosi hardware

Does exactly what it's supposed to do : replace the BT30D Pro original black volume knob by an orange one in the same shade as the new Fosi Audio hardware devices. Nice touch.

L
Laurent FERNANDEZ
Nice touch to harmonize your Fosi hardware

Does exactly what it's supposed to do : replace the BT30D Pro original black volume knob by an orange one in the same shade as the new Fosi Audio hardware devices. Nice touch.

P
Peter Sergeant

Fosi Audio Replaceable Orange & Grey Knob

P
Peter Sergeant

Fosi Audio Replaceable Orange & Grey Knob