KASPER HP-21000C

Product overview

The KASPER HP-21000C is a two-channel Class H power amplifier: 2 x 1000 W at 8 Ω in a 3U chassis with a pure copper transformer and 2 x 2000 W in bridge mode.

The HP-21000C is a high-performance amplifier designed for powerful and reliable audio output in demanding professional environments. With robust construction, flexible connectivity and reliable cooling, it is built to perform seamlessly across a wide range of installations, from medium venues to large-scale sound systems. It is ideal for professional audio setups, commercial spaces, events and auditoriums.

Key features

• Class H two-channel power amplifier
• 2 x 1000 W at 8 Ω; maximum 2 x 1500 W at 4 Ω; 2 x 2000 W at 2 Ω
• 2 x 2000 W in bridge mode; pure copper transformer
• Multi-channel / stereo output
• Built-in cooling fan
• LED status indicators
• Low noise and stable performance: SNR above 85 dB
• Durable metal construction and professional connectivity
• Universal mains voltage 100-240 V, 50-60 Hz

Power for large systems

Input power is 1100 W, frequency response 20 Hz - 25 kHz (-1 dB, -3 dB) and THD + noise below 0.1 % at 1 kHz at full power.

Connections

Each channel has an XLR input and an XLR link socket. The rear panel carries a SENSITIVITY switch (0.775 V, 1.0 V, 1.4 V), an OPERATION MODE switch (BRIDGE, PARALLEL, STEREO) with a bridge indicator, a 30 Hz HI-PASS switch and a GROUNDING switch. The loudspeakers connect to the CH1/BRIDGE and CH2 twist-lock outputs or to binding posts (CH1, BRD, CH2).

Front panel

Two level controls (CH-A and CH-B, MIN to MAX), CLIP, SIG, PRO and POWER indicators for each channel, and the mains power switch.

In the box

• HP-21000C power amplifier

KASPER HP-21000C: frequently asked questions

How much power does the HP-21000C deliver?

2 x 1000 W at 8 Ω; maximum 2 x 1500 W at 4 Ω; 2 x 2000 W at 2 Ω; 2 x 2000 W in bridge mode.

Which inputs does it have?

Balanced XLR3 inputs; input impedance 20 kΩ (10 kΩ unbalanced), with a level knob per channel on the front panel.

What mains voltage does it accept?

100-240 V at 50-60 Hz (AC socket connector, IEC).

How big and heavy is it?

A 3U chassis; published dimensions 580 x 575 x 195 mm, shipping weight 40 kg.

Where can I buy the KASPER HP-21000C in India?

The KASPER HP-21000C is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.

Workflow 1: Large-scale sound system

Main loudspeakers for a large venue.

Connections

Setup

1. Connect the processor outputs to the XLR inputs.
2. Connect the loudspeakers.
3. Switch on and raise the front level knobs.

Tip: 2 x 1000 W at 8 Ω.

Workflow 2: Events

Loudspeakers for concerts and functions.

Connections

Setup

1. Connect the mixer.
2. Connect the loudspeakers.
3. Set the levels while watching the CLIP indicators.

Tip: Maximum output: 2 x 1500 W at 4 Ω; 2 x 2000 W at 2 Ω.

Workflow 3: Auditorium

Speech and programme reinforcement in a hall.

Connections

Setup

1. Connect the processor outputs.
2. Connect the loudspeakers.
3. Set each channel's level knob.

Tip: LED indicators show the status of each channel.

Workflow 4: Bridge mode for more power

One high-power loudspeaker or subwoofer per channel pair.

Connections

Setup

1. Select bridge mode as marked on the rear panel.
2. Connect the loudspeaker to the bridge output.
3. Set the level.

Tip: 2 x 2000 W in bridge mode.

Workflow 5: Commercial spaces

Fixed installations in malls, halls and venues.

Connections

Setup

1. Install the 3U unit.
2. Connect the inputs and loudspeakers.
3. Power on and set the levels.

Tip: The built-in cooling fan keeps the amplifier cool.

Workflow 6: Professional audio setups

Medium venues to large-scale sound systems.

Connections

Setup

1. Connect the mains supply.
2. Switch on with the front power switch.
3. Check the POWER indicators.

Tip: Universal voltage: 100-240 V, 50-60 Hz.