The Gold Reaper 
Market Master EA 
Prop Firm Robots App What Quantum Emperor Is
Quantum Emperor by Bogdan Ion Puscasu (MQL5 market, $799.99) is the GBPUSD specialist of the "Quantum" family, alongside Quantum Queen and Quantum Queen X. The vendor is one of the best-selling names on the MQL5 market; the EA was released in August 2023 and is currently at version 7.5.
The vendor explains the design openly: each trading impulse is split into five to six partial positions, and instead of simply realising a loss, losses are "earned back" through the profits of subsequent trades. There is a 250-pip stop-loss and trailing — but the real risk management is the recovery logic. That is a grid approach, even if the word never appears on the product page.
How Grid Recovery Shapes the Statistics
The vendor markets Quantum Emperor with a near-perfect win rate and a low drawdown. With this design the win rate says little: a recovery logic books profits immediately and parks losses until the market comes back. That produces many small winning trades and, rarely, one big loss. The balance looks smooth while the open risk stays in the basket.
As long as GBPUSD keeps moving and comes back, this works. When the market does not come back, the EA can write off in a short time what it earned over weeks. This is exactly the pattern our guide to grid and martingale EAs means when it talks about the "too smooth equity curve".
If you want to check the EA yourself, look not at win rate and balance but at equity and floating loss relative to account size, at the ratio of the largest single loss to the largest single win, and at whether the vendor's drawdown claim matches what actually happens.
Cost & Requirements
$799.99 is a lot of money for a single-pair system; copying the vendor's signal costs $999 a month. The vendor states a $1,000 minimum deposit; with a recovery logic a buffer above that makes sense. An ECN/raw broker with tight GBPUSD spreads is a prerequisite; an overview of suitable brokers is in the EA broker comparison.
Who the Design Suits (and Who It Doesn't)
Suits traders who understand a grid-recovery logic on GBPUSD, bring capital above the minimum deposit, can sit through longer stretches of open loss and budget the EA as one building block of an EA portfolio.
Does not suit prop-firm challenges with hard daily or max-drawdown rules, accounts below the minimum deposit, or anyone who mistakes a high win rate for a safety promise.
Assessment
Quantum Emperor is a maintained grid-recovery EA from a large MQL5 vendor with openly described mechanics. The design produces high win rates and a smooth balance but shifts the risk into rare, large losses — anyone running it should plan for exactly those cases, not as an exception but as part of the system.
Quantum Emperor is not available from our partner AlgoTradingSpace (ATS). We still grade it with the same formula as every other EA, but we do not link to the vendor.