Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Name the # tubes with Det/Pre-amp of x and audio amp of x x (push-pull)

### Inputs:
table_name: table, columns: ['# Tubes', 'Converter', 'Det/Pre-amp', 'Audio Amp', 'Rectifier']

### Response:
SELECT # Tubes FROM table WHERE Det/Pre-amp = x AND Audio Amp = x x (push-pull)