Upgrades Info

MZ2 Remote Volume Control Upgrade: The MZ2 remote uses a motorized version of the Alps Blue Velvet pot, which is also used in the non-remote version. Same pot, same sound. No sonic signal degradation. It uses the Apple TV remote control, included. NO LONGER AVAILABLE

MZ2 LPS to LPS+ Upgrade: Using some of the technology developed for our latest products, the LPS+ upgrade dramatically improves the soundstage of the MZ2. When you ship your LPS to LTA, we will replace the specific components with upgraded parts.

ZOTL10 PSU Upgrade: This will upgrade your ZOTL10 Mk I to a ZOTL10 Mk II. Dramatically improve bass, dynamics, and soundstage.

ZOTL10 Remote Controlled Stepped Attenuator Upgrade: Upgrades the Alps volume control to a 64-step stepped attenuator with remote. Includes Apple remote.

NOS Mullard EL34 tube upgrade for ZOTL40 power amp or Z40 Integrated: Available for the ZOTL40 MkI and ZOTL40MkII One of the best mid-range tubes on the planet, improves everything over the stock tubes

Fern & Roby Case Upgrade for ZOTL40 or Ultralinear power amps: New chassis design, featuring low-resonance milled aluminum case designed by Fern & Roby

New Remote Control (2023): New remote control to replace the silver Apple remote control. The unit needs to be sent in for new hardware and/or reprogramming. No new functionality is introduced with this remote control. Available for: MZ3, MicroZOTL Preamplifier, Z10 Integrated, Ultralinear / Ultralinear+ Integrated, & Z40 / Z40+ Integrated

Shipping to LTA is paid for by customer. Return US shipping will be calculated at checkout. International customers, please contact us directly for a shipping quote.

No refunds / returns on upgrades. All upgrade sales are final.

Tubes

We only sell tubes to current LTA customers. If you have an LTA amp and need replacement tubes, please get in touch to see what we currently have in stock.