Booster Amplifier Price in Bangladesh | Line & Distribution Amplifiers
Booster Amplifier Prices in Bangladesh typically start from BDT 8,500 and go up to BDT 45,000 depending on the brand and power capacity.
A Booster Amplifier (often called a Line Amplifier or Pre-Amp) is not a standard sound-making device; rather, it is the critical infrastructure component used to extend audio signals over extremely long distances or to drive an additional batch of speakers when your main power amplifier has reached its maximum capacity. If your building spans across multiple floors, wings, or outdoor zones where cable length exceeds 100-200 meters, a Booster Amp ensures the audio signal remains loud and clear without degradation.
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Featured Booster Amplifiers – Specifications & Use Cases
At Expert Technologies BD, we specialize in robust Line Matching Boosters and Distribution Amplifiers from leading brands like TOA, Ahuja, and Bosch, ensuring zero signal loss for large-scale projects like universities, airports, industrial complexes, and massive mosque complexes in Dhaka and nationwide.
| Product Model | Brand | Type | Key Function | Max Output / Feature | Est. Price (BDT) |
|---|---|---|---|---|---|
| CMA-5400 / CMA-6600 | Ahuja | Line Matching Amplifier | Converts/Boosts low-Z signal to High-Z (100V). Ideal for extending lines. | 30W – 100W Distribution. | ৳12,000 – ৳22,000 |
| ZK Series (e.g., ZK-2240Z) | TOA | Booster / Zone Expander | Increases current drive to add more speakers to existing loop. | Handles heavy 100V loads. | ৳18,000 – ৳35,000 |
| PLE-1P10E / PRA-4P120 | Bosch | Plena Extension / PRAESENSA Booster | Professional grade redundancy for safety-critical zones (Evacuation). | Premium reliability. | ৳25,000 – ৳55,000 |
💡 Pro Tip: Don't buy these unless you have calculated your total speaker wattage vs. your main amplifier's remaining headroom. Buying a booster prematurely wastes budget; buying it too late causes distorted audio in distant rooms.
When Do You Actually Need a Booster Amplifier? (Buying Guide)
Many clients ask us: "My main 250W Amp isn't loud enough at the back of the hall."
Often, replacing the main amp with a bigger unit is cheaper than adding a booster. However, you absolutely NEED a Booster Amplifier if:
Scenario A: The "Distance Killer" (Cable Length > 150 Meters)
Audio signals lose strength (voltage drop) over long copper cables.
- The Problem: Your Main Amp outputs strong voltage at the source room, but by the time electricity travels 300 meters to the farthest corridor/wing of a factory or school, the volume drops noticeably (signal attenuation).
- The Fix: Place a Line Booster Amp midway (or near the far-end zone). It grabs the weakened signal, re-amplifies it cleanly, and blasts it into the final set of speakers.
Scenario B: The "Overload Prevention" (Too Many Speakers)
- The Problem: You have a 240W TOA Amplifier. You already connected 20 x 10W Ceiling Speakers (Total 200W Load). You now want to add 5 more zones (Classrooms) without unplugging the old ones.
- Math Check: 25 speakers x 10W = 250W Total Load. Your Main Amp will overload/fuse if pushed hard.
- The Fix: Keep the original 20 speakers on the Main Amp. Connect the new 5 classrooms to a separate Booster Amplifier. The Booster takes its input from the Main Amp's "Line Out."
Scenario C: Impedance Mismatch Correction
- Problem: Main system is Low Impedance (8 Ohm Stereo Hi-Fi), but you suddenly need to attach cheap generic 70V/100V Column speakers to cover a new extension area.
- Fix: An Impedance Matching / Step-Up Transformer Amp (Booster) converts the stereo signal so those 100V speakers can work efficiently without dragging down your expensive Hi-Fi amp.
Technical Specs Explained (For Procurement)
When comparing models on our site, check these 3 parameters:
- Input Sensitivity: How much incoming juice does it need to wake up? Standard is usually 1V or 0.775V line level. If connecting to a mixing console output, almost all brands match. If connecting to microphone directly (rare but possible for simple boosters), ensure it accepts Mic-level (-50dB).
- Output Attenuation Switches: Does it allow you to manually tune the output gain? Useful if the zone gets too loud compared to other areas.
- Chassis Size (Rack Units): Most boosters are small half-rack (1U or 2U) units because they don't contain huge power transformers like full-size amps. This makes them easy to hide in ceiling voids or small equipment racks.
Installation Considerations in Bangladesh
- Location Matters: Because a booster receives "weak" input signals, placing it near strong magnetic interference sources (like big electrical DB boxes or lift motors) might introduce hum/buzz noise (Ground Loop). Our installers use Balanced Cables (XLR/TRS) for the inter-link between Main Amp -> Booster to cancel out this local interference completely.
- Earth/Grounding: Improper grounding kills booster circuits fast. Ensure the rack/cabinet where you mount this unit has a solid earth connection.
Internal Linking (The "Complete System")
If you are looking at Booster Amps, you likely have a complex project. Explore our related essential components:
- 📢 PA Speaker Systems – To connect as the endpoint receivers of the boosted signal.
- 🔌PA Amplifiers – The primary source feeding the booster.
- 🔗 Speaker Selector Switches (Zone Controllers)– Often placed after a booster to manage which amplified area turns on/off.
- 🔊 Ceiling/Paging Microphones – To test the boosted line clearly end-to-end.
Frequently Asked Questions (FAQ)
Q1: Can I use a Booster Amplifier without a mixer?
A: Generally, no. Booster amplifiers typically have only one "Line Input" and lack microphone ports. They are designed to be connected to a mixer or a mixer-amplifier's output.
Q2: Can I connect a 500W booster to a 100W mixer?
A: Yes. The wattage of the mixer doesn't matter; the booster only takes the low-voltage audio signal (Line Out) from the mixer and amplifies it using its own internal 500W power supply.
Q3: How many speakers can I connect to a 500W Ahuja Booster?
A: You can connect any number of speakers as long as their total combined wattage is less than 500W. For safety, we recommend keeping the load at 400W-450W (80-90% capacity).
Q4: Do booster amplifiers have Bluetooth?
A: Most professional booster amplifiers do not have Bluetooth, as they are slave units. Bluetooth is usually found on the Mixer Amplifier that feeds the booster.
Q5: Why do I need a booster for my Mosque?
A: If your current amplifier is struggling to power both the indoor speakers and the large outdoor horn speakers, adding a booster will provide dedicated power to the horns, resulting in louder and clearer sound.
