Marenius LB-20 Line Level Booster
 Marenius LB-20 Line Level BoosterMarenius LB-20 Line Level Booster 

Marenius LB-20 Line Level Booster

    • Low-noise line amplifier with selectable gain 0/+10/+20 dB
    • Mini-XLR in/out and CLIP indicators
    • Heavy-duty metal case in a compact size
    • 4 x AAA batteries and external DC 6-18 V
  • More Details...

Model:  MAR-LB20
Part Number:  LB-20
Manufacturer:  Marenius

(£200.00 Exc. VAT)
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Item discontinued  

Item discontinued

Related Products

Marenius LB-20 Line Level Booster

LB-20 is a portable and compact two-channels Line Level Booster. It offers selectable gain of +10 and +20 dB. CLIP indicators will help finding the right setting.

LB-20 is a very compact, battery-powered low-noise line level amplifier, housed in an black-anodized all aluminium case. Inputs and outputs are 3-pole mini-XLRs. Gain is selectable in three steps: 0 dB, +10 dB and +20 dB. CLIP indicators show red at 1 dB below output clip level. LB-20 can be powered by four internal standard AAA batteries for 10 - 15 hours continuous use, or by an external DC power supply with 6 - 18 V output @ 100 mA.


  • Low-noise line amplifier
  • Selectable gain 0/+10/+20 dB
  • Mini-XLR in/out
  • CLIP indicators
  • Heavy-duty metal case
  • Compact size
  • 4 x AAA batteries
  • External DC 6-18 V


Gain select 0 / +10 / +20 dB
Max input signal +20 / +10 / 0 dBu
Max output signal +20 dBu @ 600 ohms (bal)
Frequency response 10 ... 40 kHz   +0 / -0.5 dB
THD+N 0.0004% @ +20 dB into 600 ohms,
1 kHz, 10 dB gain
Equiv. input noise -105 dBu, A-weighted @ 20 dB gain
Power supply 4 x AAA alkaline or NiMH batteries
for 10 -15 hours continuous use
Ext. DC 6 - 18 V
Size WxHxD 90 x 40 x 135 mm
Weight 520 grams (incl. batteries)

Delivery Services

At Pinknoise Systems we like to offer our customers a wide choice of delivery options for their orders, and our prices are affordable and competitive. We also use only the best, most reliable couriers and delivery services to get your equipment where it needs to be - quickly and securely. Please find an outline of our services, prices and timescales below.

Service Timescale Price
UK Mainland Royal Mail Small Parcel 2-4 Days £3.99
UK Offshore Royal Mail 2-4 Days £9.99
UK Standard Courier 2-4 Days £6.49
UK Express Courier Next Day £7.99
International Shipping From 1-8 Days (Full Details) From £15.00

Delivery Times

Delivery times are based on when the packages leaves our premises. Sometimes, due to stock restrictions or a non completed order, delivery may take longer as there is a delay with dispatch. We will always notify customers of any issues and problems via email or telephone. If your order is urgent or details change please do let us know.

For full details, fees, and time schedules, please see our Delivery Information page.

Returns & Refunds

New items: You can return goods you have ordered from us for any reason, at any time within 7 working days of receipt, for a full refund or for an exchange for a different product from our range. The cost of returning goods to us shall be borne by you, the customer, in all circumstances without exception.

Items must be packed suitably and insured for full loss in the event of a delivery problem. Pinknoise Systems will not be responsible for lost or damaged return goods. Lost or damaged goods may effect the level of refund you receive.

Used items: Please note this does not apply to used item unless they are deemed faulty.

For full details of our returns policy, please click here.

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