MP3 Mono Amplifier V2.0, Pre-built

Stock code: 2154B
filler

Pricing:Ex VATInc VAT
1+
£4.05
£4.86
5+ £3.35 £4.02
50+ £3.05 £3.66
200+ £2.90 * £3.48 *
300+ £2.75 * £3.29 *

* Price shown includes kit bulk buy discount

Stock:
Discontinued - This page is for reference for existing customers of this product. It is not possible to buy this item.

Description

AttributeValue
PCB Length 45.5mm.
PCB Width 35.5mm.
Voltage Nominal 9V.
Voltage Range 4 - 12V (Absolute Maximum 15V).
Typical Standby Current 4mA.
Current Max at Nominal Voltage 70mA.

Same Day Dispatch

  • Orders placed online before 3:00pm Monday - Friday (excluding public holidays and our Christmas shutdown period) are always dispatched the same day provided the goods are in stock. If the goods are not in stock we will endeavour to contact you as soon as possible to discuss a dispatch date.

UK Deliveries

  • If you live on the UK mainland and don't have any large materials or lithium batteries in your order it will cost £3.95 (£4.74 including VAT) if you spend less than £40 (£48 including VAT).
  • If you spend between £40 and £200 (£48 - £240.00 including VAT, excluding large materials or lithium batteries) delivery is free to most locations, £12 (£14.40 including VAT, excluding large materials or lithium batteries) to Northern Ireland and £15 (£18.00 including VAT, excluding large materials or lithium batteries) to UK remote locations. For a list of postcodes that will be charged the remote location rate: remote area list.
  • If you spend over £200 (£240.00 including VAT, excluding large materials or lithium batteries) delivery is free within the UK.

Rest of the world

  • These orders are sent via UPS, and the cost is dependant on the service you choose at checkout. Alternatively you can choose the free collection option and have your own courier collect it from us. International orders can only be shipped to the registered card address. Please note: International orders may be charged import duty dependant on local import laws and duty rates. These charges are usually billed to you directly from UPS.
  • Delivery times vary for international orders depending on the service selected and the destination. You can see the delivery time and cost at the shipping stage, or by using the shipping estimator from within the shipping basket.

Collection

  • If you would like to collect your order, or use your own courier then there is an option you can select during checkout. We do not charge a packaging or handling fee for this service, and you will receive an email when your order has been processed, you can collect half an hour after receipt of this email.

Further Information

Please note: Instructions for using this product (if available) can be found in the product description.
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Q:
Do you have a pictorial exploded view of how to assemble the mono amplifier circuit
Thank you
Asked by: jJohn Williams
A:
Hi John, Unfortunately the only example of how to build the item is via the build instructions. However Eggar's school produce this scale model of the Mono amp kit at 8 times the normal size, I hope this gives a better idea for you https://www.kitronik.co.uk/blog/gallery-mono-amp-training-aid-eggars-school/
Answered by: Michael Lockhart
16-Mar-18

Q:
Is the speaker 66mm in radius or diameter?
Asked by: Guy
A:
Hi Guy, the speaker supplied with this kit is 66mm in diameter.
Answered by: Michael Lockhart
01-Feb-18

Q:
I would like the student to build this board - does it come unbuilt??
Asked by: Mary O'Brien
A:
Hi Mary, Yes we do have a version where the students built it them self, https://www.kitronik.co.uk/2154-mp3-mono-amplifier-v20.html.
Answered by: Michael Lockhart
13-Jun-17

Q:
Can I use the prebult mp3 mono amplifier with a crystal radio set?
Asked by: Roger Flood
A:

Hello Roger, It is possible to add another amplifier to the output of the radio kit, however the mono amp kit wouldn’t be a suitable option. The 3W class D amp kit would be a more suitable option. I have assumed that you are using our FM radio kit for this, other kits can be different.

Answered by: Michael Lockhart
07-Dec-16

Q:
Is there any chance of ordering just the pre-built amplifier board? I have plenty of speakers and battery snaps, but have run out of boards.
Asked by: Tony Hobbs
A:

Hi Tony, Unfortunately we are unable to supply just the built boards. This is due to us having speakers and battery clips automatically ordered when a batch of these boards are built and as such we wouldn’t be able to separate these out.

Answered by: Michael Lockhart
28-Sep-16

Q:
What is the optimum input impedance for this amplifier? I have a high impedance source (4Kohms) and need to match it to this unit. Thanks.
Asked by: Raf
A:

If you take a look at the input biasing on page 3 of the chip datasheet this explains further. However with how the kit is designed your input impedance should be fine. https://www.kitronik.co.uk/pdf/LM386.pdf

Answered by: Michael Lockhart
08-Mar-16

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