ZXMAK2 v2.9.0.38062 Beta is released. ZXMAK2 is plugin based ZX Spectrum Virtual Machine. On the other side, this is flexible ZX Spectrum emulator. Project written in C#. Currently it works on Windows platform and using Managed DirectX.

Support the following ZX Spectrum clones:
- ZX Spectrum 48 (later model contended memory)
- ZX Spectrum 128 (later model contended memory)
- Pentagon 128
- SCORPION 256
- ATM 450
- PROFI 5xx
- QUORUM 256
- Leningrad 1
- Other (through custom configuration and plugins, for example LEC mod)

ZXMAK2 v2.9.0.38062 Beta Changelog:
- major sound improvements (added oversampling for AY8910, fixed common sound mixer, fixed AY mixer & generator, etc);
- fix AY8910 mixer & noise;
- minor sync stability improvements;
- minor fix for the emulation loop;
- fix support for 100 Hz displays;
- fix Sprinter ULA and Memory device compatibility;
- change plugins lookup to load assemblies from plugins.config;
- add GDB server debugger;
- a lot of code refactoring;

Download: ZXMAK2 v2.9.0.38062 Beta
Source: Here