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Black half-rack amplifier with front panel controls

JBL

JBL 2120Z 240 W 2 Channel Amplifier Receiver

SKU CH-CZ8B-JG9D1

Two-channel 240 W amplifier drives 4 Ω, 8 Ω, 70 V or 100 V lines in a fanless half-rack unit

  • Product typeAmplifier
  • 240 W RMS total power drives demanding speaker systems
  • 2 x 120 W per channel delivers balanced stereo output
  • Fanless design ensures silent operation in quiet environments
  • 4 Ω, 8 Ω, 70 V and 100 V compatibility fits diverse installations

240 W Two-Channel Amplifier

The JBL 2120Z delivers 240 W RMS across two channels, each rated at 120 W into 4 ohm or 8 ohm loads. It also supports 70 V and 100 V distributed-line operation for commercial installations. A fanless DriveCore design keeps the 1U half-rack chassis silent in noise-sensitive spaces.

Check Load Impedance and Line Voltage

Verify that your speakers present a 4 ohm or 8 ohm load per channel, or that the 70 V and 100 V line taps match the transformer taps on your existing loudspeakers. Confirm you have a half-rack shelf or 1U rack space available for mounting. Buyers who need more than two zones or higher channel counts should consider a different amplifier.

How it compares

Measured against everything we stock in Stereo & AV Receivers, at today’s prices. Recalculated every night.

Price $665.99
Pricier than about 90% of the 144 comparable items (median $78.49).

Specifications

Product
Product typeAmplifier

Questions about this item

What comes in the box with the JBL 2120Z and do I need to buy a 1U half-rack mounting kit separately?

The JBL 2120Z includes a 1U half-rack mounting kit in the box, so no separate purchase is required for rack installation.

Should I choose the 70 V or 100 V output setting for my distributed audio system?

Select 70 V for longer cable runs with lower power per speaker, or 100 V when you need higher power delivery across the same wiring infrastructure.

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