Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit
![Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit](https://hamradioamplifier.com/images/Pye_pre_amplifier_type_HF_25A_for_the_Pye_HF_25_valve_amplifier_Control_unit_01_hifk.jpg)
![Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit](https://hamradioamplifier.com/images/Pye_pre_amplifier_type_HF_25A_for_the_Pye_HF_25_valve_amplifier_Control_unit_02_pehg.jpg)
![Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit](https://hamradioamplifier.com/images/Pye_pre_amplifier_type_HF_25A_for_the_Pye_HF_25_valve_amplifier_Control_unit_03_je.jpg)
![Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit](https://hamradioamplifier.com/images/Pye_pre_amplifier_type_HF_25A_for_the_Pye_HF_25_valve_amplifier_Control_unit_04_rec.jpg)
![Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit](https://hamradioamplifier.com/images/Pye_pre_amplifier_type_HF_25A_for_the_Pye_HF_25_valve_amplifier_Control_unit_05_ea.jpg)
![Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit](https://hamradioamplifier.com/nebegozer.gif)
![Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit](https://hamradioamplifier.com/vicipuj.gif)
This is the control unit for the Pye HF-25 valve amplifier. It can connect directly to a Pye HF-25 amplifier via the octal socket or, if preferred, an octal wire can be used (although this is not included). Various cosmetic issues - see photos.
![Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit](https://hamradioamplifier.com/nebegozer.gif)
![Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit Pye pre-amplifier type HF-25A for the Pye HF-25 valve amplifier. Control unit](https://hamradioamplifier.com/vicipuj.gif)