Backert Labs
Rhumba Extreme 1.4
Introduced 2023$8,500 MSRP
Upper-tier version of Backert Labs' Rhumba tube line stage with the company's GreenForce capacitor-based power supply and fully balanced operation. Runs a pair of 12AU7 tubes and was favorably reviewed by The Absolute Sound in 2025.
MSRP
$8,500
Used market · Excellent
$5,900est.
-31% vs MSRP
as of Aug 17, 2026MSRP to used market
From $8,500 at launch to $5,900 today (estimated).
Specifications
- Type
- tube line stage
- Inputs
- 2x XLR, 3x RCA, HT bypass
- Outputs
- 2x XLR, 2x RCA, rec out
- Topology
- balanced, 2x 12AU7, GreenForce power supply
- Weight
- 13 lbs
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